Personkort bilde
Associate Professor

Ellen Berit Nordal

International coordinator, research and teaching Department of Clinical Medicine
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Pediatrics

Pediatric rheumatology

International coordinator for Faculty of health, medical studies.

Research and teaching

  • Nordal, Ellen Berit; Pistorio, A; Rygg, Marite; Giancane, Gabriella; Maghnie, Mohamed; Di Lorgi, Natascia; Flemming, Kristina; Hofer, M; Melo-Gomes, José A.; Bica, Blanca; Brunner, Jürgen; Dannecker, Günther; Gerloni, Valeria; Harjacek, Miroslav; Huppertz, Hans-Iko; Pratsidou-Gertsi, Polyxeni; Nielsen, Susan; Stanevicha, Valda; Cate, Rebeca Ten; Vougiouka, Olga; Pastore, Serena; Simonini, Gabriele; Ravelli, Angelo; Martini, Alberto; Ruperto, Nicolino. Growth and puberty in juvenile dermatomyositis: a longitudinal cohort study.. (https://www.ncbi.nlm.nih.gov/pubmed?Db=pubmed&Cmd=ShowDetailView&TermToSearch=31507092) Arthritis care & research 2019. ISSN 2151-464X.s doi: 10.1002/acr.24065.
  • Guillaume-Czitrom, Severine; Sibilia, Jean; Nordal, Ellen Berit. Growing up with chronic arthritis: the confusing matter of classification. RMD Open 2017; Volum 3:e000417. ISSN 2056-5933.s 1 - 4.s doi: 10.1136/rmdopen-2016-000417.
  • Henrey, Andrew; Rypdal, Veronika Gjertsen; Rypdal, Martin Wibe; Loughin, Thomas; Nordal, Ellen Berit; Guzman, Jaime. Validation of prediction models of severe disease course and non-achievement of remission in juvenile idiopathic arthritis part 2: Results of the Nordic model in the Canadian cohort. Arthritis Research & Therapy 2020; Volum 22:10. ISSN 1478-6354.s 1 - 11.s doi: 10.1186/s13075-019-2091-8.

  • Frid, Paula; Baraniya, Divyashri; Halbig, Josefine Mareile; Rypdal, Veronika Gjertsen; Songstad, Nils Thomas; Rosén, Annika; Berstad, Johanna Elisabeth Rykke; Flatø, Berit; Alakwaa, Fadhl; Gil, Elisabeth Grut; Cetrelli, Lena Elisabet; Chen, Tsute; Al-hebshi, Nezar Noor; Nordal, Ellen Berit; Al-Haroni, Mohammed. Salivary Oral Microbiome of Children With Juvenile Idiopathic Arthritis: A Norwegian Cross-Sectional Study. Frontiers in Cellular and Infection Microbiology 2020; Volum 10. ISSN 2235-2988.s 1 - 13.s doi: 10.3389/fcimb.2020.602239.

  • Frid, Paula; Augdal, Thomas Angell; Larheim, Tore Arne; Halbig, Josefine Mareile; Rypdal, Veronika Gjertsen; Songstad, Nils Thomas; Rosén, Annika; Tylleskär, Karin; Berstad, Johanna Elisabeth Rykke; Flatø, Berit; Stoustrup, Peter; Rosendahl, Karen; Kirkhus, Eva Astrid; Nordal, Ellen Berit. Efficacy and safety of intraarticular corticosteroid injections in adolescents with juvenile idiopathic arthritis in the temporomandibular joint: A Norwegian 2-year prospective multicenter pilot study. Pediatric Rheumatology 2020; Volum 18:75. ISSN 1546-0096.s 1 - 16.s doi: 10.1186/s12969-020-00464-3.

  • Rypdal, Veronika Gjertsen; Glerup, Mia; Songstad, Nils Thomas; Bertelsen, Geir; Christoffersen, Terje; Arnstad, Ellen Dalen; Aalto, Kristiina; Berntson, Lillemor; Fasth, Anders; Herlin, Troels; Ekelund, Maria; Peltoniemi, Suvi; Toftedal, Peter; Nielsen, Susan; Leinonen, Sanna; Bangsgaard, R.; Nielsen, Rasmus; Rygg, Marite; Nordal, Ellen Berit. Uveitis in Juvenile Idiopathic Arthritis 18-Year Outcome in the Population-based Nordic Cohort Study. Ophthalmology (Rochester, Minn.) 2020. ISSN 0161-6420.s doi: 10.1016/j.ophtha.2020.08.024.

  • Glerup, Mia; Stoustrup, Peter Bangsgaard; Matzen, Louise Hauge; Rypdal, Veronika Gjertsen; Nordal, Ellen Berit; Frid, Paula; Arnstad, Ellen Dalen; Rygg, Marite; Thorarensen, Olafur; Ekelund, Maria; Berntson, Lillemor; Fasth, Anders; Nilsson, H; Peltoniemi, Suvi; Aalto, Kristiina; Arte, Sirpa; Toftedal, Peter; Nielsen, Susan; Kreiborg, S.; Herlin, T; Pedersen, T.. Longterm Outcomes of Temporomandibular Joints in Juvenile Idiopathic Arthritis: 17 Years of Followup of a Nordic Juvenile Idiopathic Arthritis Cohort.. Journal of Rheumatology 2020; Volum 47 (5). ISSN 0315-162X.s 730 - 738.s doi: 10.3899/jrheum.190231.

  • Stoustrup, Peter; Resnick, Cory M; Pedersen, Thomas Klit; Abramowicz, Shelly; Michelotti, Ambra; Küseler, Annelise; Verna, Carlalberta; Kellenberger, Christian J.; Nordal, Ellen Berit; Caserta, Giuliana; Jankovska, Iveta; Halbig, Josefine Mareile; Kristensen, Kasper Dahl; Arvidsson, Linda Zamoline; Spiegel, Lynn; Stoll, Mathew L.; Lerman, Melissa; Glerup, Mia; Defabianis, Patrizia; Frid, Paula Hanna Therese; Alstergren, Per; Cron, Randy Q.; Ringold, Sarah; Nørholt, Sven Erik; Peltomäki, Timo; Herlin, Troels; Peacock, Zachary S.; Twilt, Marinka. Standardizing Terminology and Assessment for Orofacial Conditions in Juvenile Idiopathic Arthritis: International, Multidisciplinary Consensus-based Recommendations.. Journal of Rheumatology 2019; Volum 45 (5). ISSN 0315-162X.s 518 - 522.s doi: 10.3899/jrheum.180785.

  • Glerup, Mia; Rypdal, Veronika Gjertsen; Arnstad, Ellen Dalen; Ekelund, Maria; Peltoniemi, Suvi; Aalto, Kristiina; Rygg, Marite; Toftedal, Peter; Nielsen, Susan; Fasth, Anders; Berntson, Lillemor; Nordal, Ellen Berit; Herlin, Troels. Long-term outcomes in juvenile idiopathic arthritis: 18 years of follow-up in the population-based Nordic Juvenile Idiopathic Arthritis (JIA) cohort. Arthritis care & research 2019; Volum 72 (4). ISSN 2151-464X.s 507 - 516.s doi: 10.1002/acr.23853.

  • Rypdal, Veronika Gjertsen; Guzman, Jaime; Henrey, Andrew; Loughin, Thomas; Glerup, Mia; Arnstad, Ellen Dalen; Aalto, Kristiina; Rygg, Marite; Nielsen, Susan M.; Herlin, Troels; Fasth, Anders; Berntson, Lillemor; Rypdal, Martin Wibe; Nordal, Ellen Berit. Validation of prediction models of severe disease course and non-achievement of remission in juvenile idiopathic arthritis: part 1-results of the Canadian model in the Nordic cohort. Arthritis Research & Therapy 2019; Volum 21:270. ISSN 1478-6354.s 1 - 10.s doi: 10.1186/s13075-019-2060-2.

  • Nordal, Ellen Berit; Pistorio, A; Rygg, Marite; Giancane, Gabriella; Maghnie, Mohamed; Di Lorgi, Natascia; Flemming, Kristina; Hofer, M; Melo-Gomes, José A.; Bica, Blanca; Brunner, Jürgen; Dannecker, Günther; Gerloni, Valeria; Harjacek, Miroslav; Huppertz, Hans-Iko; Pratsidou-Gertsi, Polyxeni; Nielsen, Susan; Stanevicha, Valda; Cate, Rebeca Ten; Vougiouka, Olga; Pastore, Serena; Simonini, Gabriele; Ravelli, Angelo; Martini, Alberto; Ruperto, Nicolino. Growth and puberty in juvenile dermatomyositis: a longitudinal cohort study.. (https://www.ncbi.nlm.nih.gov/pubmed?Db=pubmed&Cmd=ShowDetailView&TermToSearch=31507092) Arthritis care & research 2019. ISSN 2151-464X.s doi: 10.1002/acr.24065.

  • Glerup, Mia; Thiel, Steffen; Rypdal, Veronika Gjertsen; Arnstad, Ellen Dalen; Ekelund, Maria; Peltoniemi, Suvi; Aalto, Kristiina; Rygg, Marite; Nielsen, Susan; Fasth, Anders; Berntson, Lillemor; Nordal, Ellen Berit; Herlin, Troels. Complement lectin pathway protein levels reflect disease activity in juvenile idiopathic arthritis: A longitudinal study of the Nordic JIA cohort. Pediatric Rheumatology 2019; Volum 17:63. ISSN 1546-0096.s 1 - 9.s doi: 10.1186/s12969-019-0367-9.

  • Nordal, Ellen Berit; Rypdal, Veronika Gjertsen; Arnstad, Ellen Dalen; Aalto, Kristiina; Berntson, Lillemor; Ekelund, Maria; Fasth, Anders; Glerup, Mia; Herlin, Troels; Nielsen, Susan; Peltoniemi, Suvi; Zak, Marek; Songstad, Nils Thomas; Rygg, Marite. Participation in school and physical education in juvenile idiopathic arthritis in a Nordic long-term cohort study. Pediatric Rheumatology 2019; Volum 17:44. ISSN 1546-0096.s 1 - 10.s doi: 10.1186/s12969-019-0341-6.

  • Hetlevik, Siri Opsahl; Flatø, Berit; Aaløkken, Trond Mogens; Samersaw-Lund, May Brit; Reiseter, Silje; Mynarek, Georg; Nordal, Ellen Berit; Rygg, Marite; Lilleby, Vibke. Pulmonary manifestations and progression of lung disease in juvenile-onset mixed connective tissue disease. Journal of Rheumatology 2019; Volum 46 (1). ISSN 0315-162X.s 93 - 100.s doi: 10.3899/jrheum.180019.

  • Hinks, Anne; Marion, Miranda C.; Cobb, Joanna; Comeau, Mary E.; Sudman, Marc; Ainsworth, Hannah C.; Bowes, John; Becker, Mara L.; Bohnsack, John F.; Haas, Johannes-Peter; Lovell, Daniel J.; Mellins, Elizabeth D.; Nelson, J. Lee; Nordal, Ellen Berit; Punaro, Marilynn; Reed, Ann M.; Rose, Carlos D.; Rosenberg, Alan M.; Rygg, Marite; Smith, Samantha L.; Stevens, Anne M.; Videm, Vibeke; Wallace, Carol A.; Wedderburn, Lucy R.; Yarwood, Annie; Yeung, Rae S.M.; Langefeld, Carl D.; Thompson, Susan D.; Thomson, Wendy; Prahalad, Sampath. Brief Report: The Genetic Profile of Rheumatoid Factor?Positive Polyarticular Juvenile Idiopathic Arthritis Resembles That of Adult Rheumatoid Arthritis. Arthritis & Rheumatology 2018; Volum 70 (6). ISSN 2326-5191.s 957 - 962.s doi: 10.1002/art.40443.

  • Arnstad, Ellen Dalen; Rypdal, Veronika Gjertsen; Peltoniemi, Suvi; Herlin, T; Berntson, Lillemor; Fasth, Anders; Nielsen, Susan; Glerup, Mia; Ekelund, Maria; Zak, Marek; Aalto, Kristiina; Nordal, Ellen Berit; Romundstad, Pål Richard; Rygg, Marite. Early self-reported pain in juvenile idiopathic arthritis (JIA) is related to long-term outcomes. Results from the Nordic JIA cohort study.. Arthritis care & research 2018; Volum 71 (7). ISSN 2151-464X.s 961 - 969.s doi: 10.1002/acr.23715.

  • Flatø, Berit; Rygg, Marite; Nordal, Ellen Berit; Røisland, Mona; Ødegård, Hanne Beate; Hoftun, Gry Børmark; Songstad, Nils Thomas; Consolaro, Alessandro; Bovis, Francesca; Ruperto, Nicolino. The Norwegian version of the Juvenile Arthritis Multidimensional Assessment Report (JAMAR). Rheumatology International 2018; Volum 38. ISSN 0172-8172.s 291 - 298.s doi: 10.1007/s00296-018-3963-y.

  • Rypdal, Veronika Gjertsen; Arnstad, Ellen Dalen; Aalto, Kristiina; Berntson, Lillemor; Ekelund, Maria; Fasth, Anders; Glerup, Mia; Herlin, Troels; Nielsen, Susan; Peltoniemi, Suvi; Zak, Marek; Rygg, Marite; Rypdal, Martin Wibe; Nordal, Ellen Berit. Predicting unfavorable long-term outcome in juvenile idiopathic arthritis: Results from the Nordic cohort study. Arthritis Research & Therapy 2018; Volum 20 (91). ISSN 1478-6354.s doi: 10.1186/s13075-018-1571-6.

  • Frid, Paula Hanna Therese; Nordal, Ellen Berit; Bovis, Francesca; Giancane, Gabriella; Larheim, Tore Arne; Rygg, Marite; Pires Marafon, Denise; De Angelis, Donato; Palmisani, Elena; J Murray, Kevin; Oliveira, Sheila; Simonini, Gabriele; Corona, Fabrizia; Davidson, Joyce; Foster, Helen; Steenks, Michel H.; Flatø, Berit; Zulian, Francesco; Baildam, Eileen M.; Saurenmann, Rotraud K.; Lahdenne, Pekka; Ravelli, Angelo; Martini, Alberto; Pistorio, Angela; Ruperto, Nicolino. Temporomandibular Joint Involvement in Association With Quality of Life, Disability, and High Disease Activity in Juvenile Idiopathic Arthritis. Arthritis care & research 2017; Volum 69 (5). ISSN 2151-464X.s 677 - 686.s doi: 10.1002/acr.23003.

  • Beukelman, Timothy; Anink, Janneke; Berntson, Lillemor; Duffy, Ciaran; Ellis, Justine A.; Glerup, Mia; Guzman, Jaime; Horneff, Gerd; Kearsley-Fleet, Lianne; Klein, Ariane; Klotsche, Jens; Magnusson, Bo; Minden, Kirsten; Munro, Jane E.; Niewerth, Martina; Nordal, Ellen Berit; Ruperto, Nicolino; Santos, Maria José; Schanberg, Laura E.; Thomson, Wendy; Suijlekom-Smit, Lisette van; Wulffraat, Nico; Hyrich, Kimme. A survey of national and multi-national registries and cohort studies in juvenile idiopathic arthritis: challenges and opportunities. Pediatric Rheumatology 2017; Volum 15 (1). ISSN 1546-0096.s doi: 10.1186/s12969-017-0161-5.

  • Alberdi-Saugstrup, Mikel; Enevold, Christian; Zak, M; Nielsen, S; Nordal, Ellen Berit; Berntson, L; Fasth, A; Rygg, Marite; Müller, K. Non-HLA gene polymorphisms in juvenile idiopathic arthritis: associations with disease outcome. Scandinavian Journal of Rheumatology 2017; Volum 46 (5). ISSN 0300-9742.s 369 - 376.s doi: 10.1080/03009742.2016.1238959.

  • Nordal, Ellen Berit; Rypdal, Veronika Gjertsen; Christoffersen, Terje; Aalto, Kristiina; Berntson, Lillemor; Fasth, Anders; Herlin, Troels; Nielsen, Susan; Peltoniemi, Suvi; Straume, Bjørn; Zak, Marek S.; Rygg, Marite. Incidence and predictors of Uveitis in juvenile idiopathic arthritis in a Nordic long-term cohort study. (Fulltekst: http://hdl.handle.net/10037/11422 Pediatric Rheumatology 2017; Volum 15 (66). ISSN 1546-0096.s doi: 10.1186/s12969-017-0195-8.

  • Ekelund, Maria; Aalto, Kristiina; Fasth, Anders; Herlin, Troels; Nielsen, Susan; Nordal, Ellen Berit; Peltoniemi, Suvi; Rygg, Marite; Zak, Marek; Berntson, Lillemor. Psoriasis and associated variables in classification and outcome of juvenile idiopathic arthritis - an eight-year follow-up study. Pediatric Rheumatology 2017; Volum 15 (1). ISSN 1546-0096.s doi: 10.1186/s12969-017-0145-5.

  • Alberdi-Saugstrup, Mikel; Zak, Marek; Nielsen, Susan; Herlin, Troels; Nordal, Ellen Berit; Berntson, Lillemor; Fasth, Anders; Rygg, Marite; Müller, Klaus. High-sensitive CRP as a predictive marker of long-term outcome in juvenile idiopathic arthritis. Rheumatology International 2017. ISSN 0172-8172.s 695 - 703.s doi: 10.1007/s00296-017-3657-x.

  • Hinks, A; Bowes, J; Cobb, J; Ainsworth, HC; Marion, MC; Comeau, ME; Sudman, M; Han, B; Becker, ML; Bohnsack, JF; de Bakker, PIW; Haas, JP; Hazen, M; Lovell, DJ; Nigrovic, PA; Nordal, Ellen Berit; Punnaro, M; Rosenberg, AM; Rygg, Marite; Smith, S.L.; Wise, CA; Videm, Vibeke; Wedderburn, LR; Yarwood, A; Yeung, RSM; Prahalad, S; Langefeld, CD; Raychaudhuri, S; Thompson, SD; Thomson, W. Fine-mapping the MHC locus in juvenile idiopathic arthritis (JIA) reveals genetic heterogeneity corresponding to distinct adult inflammatory arthritic diseases. Annals of the Rheumatic Diseases 2017; Volum 76 (4). ISSN 0003-4967.s 765 - 772.s doi: 10.1136/annrheumdis-2016-210025.

  • Hetlevik, Siri Opsahl; Flatø, Berit; Rygg, Marite; Nordal, Ellen Berit; Brunborg, Cathrine; Hetland, Helene; Lilleby, Vibke. Long-term outcome in juvenile-onset mixed connective tissue disease: a nationwide Norwegian study. Annals of the Rheumatic Diseases 2016; Volum 76 (1). ISSN 0003-4967.s 159 - 165.s doi: 10.1136/annrheumdis-2016-209522.

  • Esbjörnsson, Anna-Clara; Aalto, Kristiina; Broström, Eva Weidenhielm; Fasth, Anders; Herlin, Troels; Nielsen, Susan; Nordal, Ellen Berit; Peltoniemi, Suvi; Rygg, Marite; Zak, Marek; Berntson, Lillemor. Ankle arthritis predicts polyarticular disease course and unfavourable outcome in children with juvenile idiopathic arthritis. Clinical and Experimental Rheumatology 2015; Volum 33 (5). ISSN 0392-856X.s 751 - 757.

  • Berntson, Lillemor; Nordal, Ellen Berit; Fasth, Anders; Aalto, Kristiina; Herlin, T; Nielsen, Susan; Rygg, Marite; Zak, M; Ronnelid, J. Anti-type II collagen antibodies, anti-CCP, IgA RF and IgM RF are associated with joint damage, assessed eight years after onset of juvenile idiopathic arthritis (JIA). Pediatric Rheumatology 2014; Volum 12. ISSN 1546-0096.s 22 - .s doi: 10.1186/1546-0096-12-22.

  • Bemtson, Lillemor; Nordal, Ellen Berit; Aalto, Kristiina; Peltoniemi, Suvi; Herlin, Troels; Zak, Marek; Nielsen, Susan; Rygg, Marite. HLA-B27 Predicts a More Chronic Disease Course in an 8-year Followup Cohort of Patients with Juvenile Idiopathic Arthritis. Journal of Rheumatology 2013; Volum 40 (5). ISSN 0315-162X.s 725 - 731.s doi: 10.3899/jrheum.121257.

  • Nordal, Ellen Berit; Zak, M; Aalto, K; Berntson, L; Fasth, A; Herlin, T; Lahdenne, P; Nielsen, S; Peltoniemi, S; Straume, Bjørn; Rygg, Marite. Validity and predictive ability of the juvenile arthritis disease activity score based on CRP versus ESR in a Nordic population-based setting. Annals of the Rheumatic Diseases 2012; Volum 71 (7). ISSN 0003-4967.s 1122 - 1127.s doi: 10.1136/annrheumdis-2011-200237.

  • Hasija, Rachana; Pistorio, Angela; Ravelli, Angelo; Demirkaya, Erkan; Khubchandani, Raju; Guseinova, Dinara; Malattia, Clara; Canhao, Helena; Harel, Liora; Foell, Dirk; Wouters, Carine; De Cunto, Carmen; Huemer, Christian; Kimura, Yukiko; Mangge, Harald; Minetti, Carlo; Nordal, Ellen Berit; Philippet, Pierre; Garozzo, Rosaria; Martini, Alberto; Ruperto, Nicolino. Therapeutic Approaches in the Treatment of Juvenile Dermatomyositis in Patients With Recent-Onset Disease and in Those Experiencing Disease Flare An International Multicenter PRINTO Study. Arthritis and Rheumatism 2011; Volum 63 (10). ISSN 0004-3591.s 3142 - 3152.s doi: 10.1002/art.30475.

  • Nordal, Ellen Berit; Zak, Marek; Aalto, Kristiina; Berntson, Lillemor; Fasth, Anders; Herlin, T; Lahdenne, Pekka; Nielsen, Susan; Straume, Bjørn; Rygg, Marite. Ongoing Disease Activity and Changing Categories in a Long-Term Nordic Cohort Study of Juvenile Idiopathic Arthritis. Arthritis and Rheumatism 2011; Volum 63 (9). ISSN 0004-3591.s 2809 - 2818.s doi: 10.1002/art.30426.

  • Nordal, Ellen Berit; Songstad, Nils Thomas; Berntson, L; Berntson, Lillemor; Moen, T; Moen, T; Straume, Bjørn; Rygg, Marite. Biomarkers of Chronic Uveitis in Juvenile Idiopathic Arthritis: Predictive Value of Antihistone Antibodies and Antinuclear Antibodies. Journal of Rheumatology 2009; Volum 36 (8). ISSN 0315-162X.s 1737 - 1743.s doi: 10.3899/jrheum.081318.

  • Berntson, Lillemor; Damgård, Michael; Andersson-Gäre, Boel; Andersson-Gare, Boel; Herlin, Troels; Nielsen, Susan; Nordal, Ellen Berit; Rygg, Marite; Zak, Marek; Fasth, Anders. HLA-B27 predicts a more extended disease with increasing age at onset in boys with juvenile idiopathic arthritis. Journal of Rheumatology 2008; Volum 35 (10). ISSN 0315-162X.s 2055 - 2061.

  • Stabell, Niklas; Nordal, Ellen Berit; Stensvold, Einar; Gammelsrud, Karianne Wiger; Lund, Bendik; Buhring, Frauke; Taxt, Arne; Simonsen, Gunnar Skov; Greve-Isdahl, Margrethe; Fornebo, Hans Petter; Klingenberg, Claus. Febrile neutropenia in children with cancer; a retrospective Norwegian multi-centre study of clinical and microbiological outcome. Scandinavian Journal of Infectious Diseases 2007. ISSN 0036-5548.s 1 - 7.

  • Nordal, Ellen; Nilsen, Jesper; Marhaug, Gudmund. Chorea in juvenile primary antiphospholipid syndrome. Reversible decreased circulation in the basal ganglia visualised by single photon emission computed tomography. Scandinavian Journal of Rheumatology 1999. ISSN 0300-9742.s 1 - 4.

  • Nordal, Ellen Berit; Landehag, Jørgen; Wikran, Gry Charlotte; Åsbakk, Kjetil. Acute seizures in a 10-year old boy. The Pediatric Infectious Disease Journal 2020; Volum 39 (11). ISSN 0891-3668.s 1063 - 1064.s doi: 10.1097/INF.0000000000002825.

  • Guillaume-Czitrom, Severine; Sibilia, Jean; Nordal, Ellen Berit. Growing up with chronic arthritis: the confusing matter of classification. RMD Open 2017; Volum 3:e000417. ISSN 2056-5933.s 1 - 4.s doi: 10.1136/rmdopen-2016-000417.

  • Alberdi-Saugstrup, Mikel; Berntson, Lillemor; Enevold, Christian; Fasth, Anders; Nielsen, Susan M.; Nordal, Ellen Berit; Rygg, Marite; Zak, Marek S.; Müller, Klaus G.. Non-HLA genepolymorphisms in juvenile chronic arthritis: Associations with outcome of disease. Pediatric Rheumatology 2014; Volum 12. ISSN 1546-0096.s doi: 10.1186/1546-0096-12-S1-P192.

  • Nordal, Ellen Berit. Disease activity and outcome in juvenile idiopathic arthritis; a longitudinal cohort study in the Nordic countries. 2012 (125) ISBN 978-82-90263-40-4.

  • Nordal, Ellen Berit; Songstad, Nils Thomas; Rygg, Marite. Difficulties in defining antinuclear antibody-positive patients as a separate category in the classification of juvenile idiopathic arthritis: comment on the article by Ravelli et al. Arthritis and Rheumatism 2011; Volum 63 (9). ISSN 0004-3591.s 2835 - 2835.s doi: 10.1002/art.30480.

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Validation of the Juvenile Arthritis Disease Activity Score (JADAS) based on C-reactive protein in a population-based Nordic cohort of juvenile idiopathic arthritis. Clinical and Experimental Rheumatology 2011; Volum 29. ISSN 0392-856X.s 418 - 419.

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Ongoing disease-activity in a majority of children in a Nordic Juvenile Idiopathic Arthritis (JIA) cohort. Clinical and Experimental Rheumatology 2011; Volum 29. ISSN 0392-856X.s 372 - .

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Validation of the Juvenile Arthritis Disease Activity Score (JADAS) based on C-reactive protein in a population-based Nordic cohort of juvenile idiopathic arthritis. the Pediatric Rheumatology Symposium (PRSYM) 2011-06-02 - 2011-06-05 2011.

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Lahdenne, Pekka; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Juvenile Arthritis Disease Activity Score (JADAS) based on CRP; Validity and predictive ability in a Nordic population-based setting. Pediatric Rheumatology 2011; Volum 9. ISSN 1546-0096.s P155 - .

  • Nordal, Ellen Berit; Zak, M; Berntson, L; Aalto, K; Peltoniemi, S; Nielsen, S; Straume, Bjørn; Fasth, A; Rygg, Marite. DISEASE CHARACTERISTICS AND MEDICATION DURING THE FIRST EIGHT YEARS AFTER DISEASE ONSET IN A NORDIC JUVENILE IDIOPATHIC ARTHRITIS (JIA) COHORT. Scandinavian Journal of Rheumatology 2010; Volum 39. ISSN 0300-9742.s 21 - 21.

  • Nordal, Ellen Berit. DISEASE CHARACTERISTICS AND MEDICATION DURING THE FIRST EIGHT YEARS AFTER DISEASE ONSET IN A NORDIC JUVENILE IDIOPATHIC ARTHRITIS (JIA) COHORT. Scandinavian Journal of Rheumatology 2010; Volum 39. ISSN 0300-9742.s 35 - 35.

  • Rygg, Marite; Jakobsen, Arne Martin; Nordal, Ellen. Continuously high incidence of chronic arthritis in northern Norway 1985-1999: Comparison of retrospective versus prospective studies. VII European Pediatric Rheumatology Congress 2000-09-23 - 2000-09-27 2000.

  • Nordal, Ellen; Jakobsen, Arne Martin; Rygg, Marite. Varizella Zoster infection and immunity in patients with juvenile chronic arthritis treated with methotrexate in northern Norway 1985-1999. VII European Pediatric Rheumatology Congress 2000-09-23 - 2000-09-27 2000.

  • Nordal, Ellen Berit; Landehag, Jørgen; Wikran, Gry Charlotte; Åsbakk, Kjetil. Acute seizures in a 10-year old boy. The Pediatric Infectious Disease Journal 2020; Volum 39 (11). ISSN 0891-3668.s 1063 - 1064.s doi: 10.1097/INF.0000000000002825.

  • Guillaume-Czitrom, Severine; Sibilia, Jean; Nordal, Ellen Berit. Growing up with chronic arthritis: the confusing matter of classification. RMD Open 2017; Volum 3:e000417. ISSN 2056-5933.s 1 - 4.s doi: 10.1136/rmdopen-2016-000417.

  • Alberdi-Saugstrup, Mikel; Berntson, Lillemor; Enevold, Christian; Fasth, Anders; Nielsen, Susan M.; Nordal, Ellen Berit; Rygg, Marite; Zak, Marek S.; Müller, Klaus G.. Non-HLA genepolymorphisms in juvenile chronic arthritis: Associations with outcome of disease. Pediatric Rheumatology 2014; Volum 12. ISSN 1546-0096.s doi: 10.1186/1546-0096-12-S1-P192.

  • Nordal, Ellen Berit. Disease activity and outcome in juvenile idiopathic arthritis; a longitudinal cohort study in the Nordic countries. 2012 (125) ISBN 978-82-90263-40-4.

  • Nordal, Ellen Berit; Songstad, Nils Thomas; Rygg, Marite. Difficulties in defining antinuclear antibody-positive patients as a separate category in the classification of juvenile idiopathic arthritis: comment on the article by Ravelli et al. Arthritis and Rheumatism 2011; Volum 63 (9). ISSN 0004-3591.s 2835 - 2835.s doi: 10.1002/art.30480.

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Validation of the Juvenile Arthritis Disease Activity Score (JADAS) based on C-reactive protein in a population-based Nordic cohort of juvenile idiopathic arthritis. Clinical and Experimental Rheumatology 2011; Volum 29. ISSN 0392-856X.s 418 - 419.

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Ongoing disease-activity in a majority of children in a Nordic Juvenile Idiopathic Arthritis (JIA) cohort. Clinical and Experimental Rheumatology 2011; Volum 29. ISSN 0392-856X.s 372 - .

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Validation of the Juvenile Arthritis Disease Activity Score (JADAS) based on C-reactive protein in a population-based Nordic cohort of juvenile idiopathic arthritis. the Pediatric Rheumatology Symposium (PRSYM) 2011-06-02 - 2011-06-05 2011.

  • Nordal, Ellen Berit; Zak, Marek; Berntson, Lillemor; Aalto, Kristiina; Lahdenne, Pekka; Peltoniemi, Suvi; Nielsen, Susan; Herlin, T; Straume, Bjørn; Fasth, Anders; Rygg, Marite. Juvenile Arthritis Disease Activity Score (JADAS) based on CRP; Validity and predictive ability in a Nordic population-based setting. Pediatric Rheumatology 2011; Volum 9. ISSN 1546-0096.s P155 - .

  • Nordal, Ellen Berit; Zak, M; Berntson, L; Aalto, K; Peltoniemi, S; Nielsen, S; Straume, Bjørn; Fasth, A; Rygg, Marite. DISEASE CHARACTERISTICS AND MEDICATION DURING THE FIRST EIGHT YEARS AFTER DISEASE ONSET IN A NORDIC JUVENILE IDIOPATHIC ARTHRITIS (JIA) COHORT. Scandinavian Journal of Rheumatology 2010; Volum 39. ISSN 0300-9742.s 21 - 21.

  • Nordal, Ellen Berit. DISEASE CHARACTERISTICS AND MEDICATION DURING THE FIRST EIGHT YEARS AFTER DISEASE ONSET IN A NORDIC JUVENILE IDIOPATHIC ARTHRITIS (JIA) COHORT. Scandinavian Journal of Rheumatology 2010; Volum 39. ISSN 0300-9742.s 35 - 35.

  • Rygg, Marite; Jakobsen, Arne Martin; Nordal, Ellen. Continuously high incidence of chronic arthritis in northern Norway 1985-1999: Comparison of retrospective versus prospective studies. VII European Pediatric Rheumatology Congress 2000-09-23 - 2000-09-27 2000.

  • Nordal, Ellen; Jakobsen, Arne Martin; Rygg, Marite. Varizella Zoster infection and immunity in patients with juvenile chronic arthritis treated with methotrexate in northern Norway 1985-1999. VII European Pediatric Rheumatology Congress 2000-09-23 - 2000-09-27 2000.

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