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M. Żak · SciRah

Researcher profile · Semantic Scholar

M. Żak

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M. Żak — researcher profile on SciRah

h-index: 24
Works: 70
Citations: 1,847

Most-cited papers

Juvenile chronic arthritis into adulthood: a long-term follow-up study.
M. Żak, F. K. Pedersen
2000Rheumatology221 citations Open access
Semantic Scholar
Ongoing disease activity and changing categories in a long-term nordic cohort study of juvenile idiopathic arthritis.
E. Nordal, M. Żak, K. Aalto, L. Berntson +6 more
2011Arthritis & Rheumatism203 citations
Semantic Scholar
Assessment of bone mineral density in adults with a history of juvenile chronic arthritis: a cross-sectional long-term followup study.
M. Żak, C. Hassager, D. Lovell, S. Nielsen +2 more
1999Arthritis & Rheumatism91 citations
Semantic Scholar
Long-term outcome in patients with juvenile dermatomyositis: a cross-sectional follow-up study
Per Mathiesen, H. Hegaard, T. Herlin, M. Żak +2 more
2012Scandinavian Journal of Rheumatology85 citations
Semantic Scholar
Ultrasonography and color Doppler in juvenile idiopathic arthritis: diagnosis and follow-up of ultrasound-guided steroid injection in the ankle region. A descriptive interventional study
L. Laurell, M. Court-payen, S. Nielsen, M. Żak +2 more
2011Pediatric Rheumatology Online Journal81 citations Open access
Semantic Scholar
Orofacial pain, jaw function, and temporomandibular disorders in women with a history of juvenile chronic arthritis or persistent juvenile chronic arthritis.
M. Bakke, M. Żak, B. Jensen, F. Pedersen +1 more
2001Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics80 citations
Semantic Scholar
Validity and predictive ability of the juvenile arthritis disease activity score based on CRP versus ESR in a Nordic population-based setting
E. Nordal, M. Żak, K. Aalto, L. Berntson +7 more
2012Annals of the Rheumatic Diseases75 citations
Semantic Scholar
Incidence and predictors of Uveitis in juvenile idiopathic arthritis in a Nordic long-term cohort study
EB Nordal, V. Rypdal, T. Christoffersen, K. Aalto +8 more
2017Pediatric Rheumatology Online Journal74 citations Open access
Semantic Scholar
Final Height, Armspan, Subischial Leg Length and Body Proportions in Juvenile Chronic Arthritis
M. Żak, Jørn R. Müller, Freddy Karup Pedersen
1999Hormone Research in Paediatrics72 citations
Semantic Scholar
Uveitis in Juvenile Idiopathic Arthritis: 18-year Outcome in the Population-based Nordic Cohort Study.
V. Rypdal, M. Glerup, N. Songstad, G. Bertelsen +16 more
2020Ophthalmology (Rochester, Minn.)68 citations Open access
Semantic Scholar
HLA-B27 Predicts a More Chronic Disease Course in an 8-year Followup Cohort of Patients with Juvenile Idiopathic Arthritis
L. Berntson, E. Nordal, K. Aalto, S. Peltoniemi +4 more
2013Journal of Rheumatology67 citations Open access
Semantic Scholar
Predicting unfavorable long-term outcome in juvenile idiopathic arthritis: results from the Nordic cohort study
V. Rypdal, E. Arnstad, K. Aalto, L. Berntson +11 more
2018Arthritis Research & Therapy47 citations Open access
Semantic Scholar
Clinical features and outcome in a Danish cohort of juvenile dermatomyositis patients.
P. Mathiesen, M. Żak, T. Herlin, S. Nielsen
2010Clinical and Experimental Rheumatology47 citations
Semantic Scholar
HLA-B27 predicts a more extended disease with increasing age at onset in boys with juvenile idiopathic arthritis
L. Berntson, Michael Damgård, B. Andersson-Gäre, T. Herlin +5 more
2008Journal of Rheumatology44 citations Open access
Semantic Scholar
Ultrasonography and color Doppler in juvenile idiopathic arthritis: diagnosis and follow-up of ultrasound-guided steroid injection in the wrist region. A descriptive interventional study
L. Laurell, M. Court-payen, S. Nielsen, M. Żak +1 more
2012Pediatric Rheumatology Online Journal35 citations Open access
Semantic Scholar
Refraction in juvenile chronic arthritis: a long-term follow-up study, with emphasis on myopia.
H. Fledelius, M. Żak, F. Pedersen
2001Acta ophthalmologica34 citations Open access
Semantic Scholar
In vitro cytokine production and phenotype expression by blood mononuclear cellsfrom umbilical cords, children and adults
K. Müller, M. Żak, S. Nielsen, F. K. Pedersen +2 more
1996Pediatric Allergy and Immunology33 citations
Semantic Scholar
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)
L. Berntson, E. Nordal, A. Fasth, K. Aalto +5 more
2014Pediatric Rheumatology Online Journal32 citations Open access
Semantic Scholar
Multicentric osteolysis with nodulosis and arthropathy (MONA) with cardiac malformation, mimicking polyarticular juvenile idiopathic arthritis: case report and literature review
Filip C. Castberg, S. Kjaergaard, Rebecca A. Mosig, Mollie Lobl +4 more
2013European Journal of Pediatrics31 citations
Semantic Scholar
3D analysis of facial asymmetry in subjects with juvenile idiopathic arthritis.
Sune Demant, N. V. Hermann, T. Darvann, M. Żak +3 more
2011Rheumatology31 citations
Semantic Scholar
Participation in school and physical education in juvenile idiopathic arthritis in a Nordic long-term cohort study
E. Nordal, V. Rypdal, E. Arnstad, K. Aalto +11 more
2019Pediatric Rheumatology Online Journal29 citations Open access
Semantic Scholar
Ocular complications and visual outcome in juvenile chronic arthritis: a 25-year follow-up study.
M. Żak, H. Fledelius, F. Pedersen
2003Acta ophthalmologica29 citations Open access
Semantic Scholar
FGB mutations leading to congenital quantitative fibrinogen deficiencies: an update and report of four novel mutations.
A. Casini, S. Lukowski, V. L. Quintard, A. Crutu +4 more
2014Thrombosis Research28 citations Open access
Semantic Scholar
Juvenile systemic lupus erythematosus onset patterns in Vietnamese children: a descriptive study of 45 children
Dung Ngọc Khánh Nguyễn, Loan Huynh, S. Nielsen, M. Żak +1 more
2012Pediatric Rheumatology Online Journal28 citations Open access
Semantic Scholar
Early Self‐Reported Pain in Juvenile Idiopathic Arthritis as Related to Long‐Term Outcomes: Results From the Nordic Juvenile Idiopathic Arthritis Cohort Study
E. Arnstad, V. Rypdal, S. Peltoniemi, T. Herlin +10 more
2019Arthritis care & research24 citations Open access
Semantic Scholar
Ankle arthritis predicts polyarticular disease course and unfavourable outcome in children with juvenile idiopathic arthritis.
Anna-Clara Esbjörnsson, K. Aalto, E. Broström, A. Fasth +7 more
2015Clinical and Experimental Rheumatology21 citations
Semantic Scholar
Comparison of ultrasonography with Doppler and MRI for assessment of disease activity in juvenile idiopathic arthritis: a pilot study
L. Laurell, M. Court-payen, S. Nielsen, M. Żak +2 more
2012Pediatric Rheumatology Online Journal21 citations Open access
Semantic Scholar
Fatigue in young adults with juvenile idiopathic arthritis 18 years after disease onset: data from the prospective Nordic JIA cohort
E. Arnstad, M. Glerup, V. Rypdal, S. Peltoniemi +10 more
2021Pediatric Rheumatology Online Journal20 citations Open access
Semantic Scholar
Psoriasis and associated variables in classification and outcome of juvenile idiopathic arthritis - an eight-year follow-up study
M. Ekelund, K. Aalto, A. Fasth, T. Herlin +7 more
2017Pediatric Rheumatology Online Journal18 citations Open access
Semantic Scholar
Ultrasonography and color Doppler of proximal gluteal enthesitis in juvenile idiopathic arthritis: a descriptive study
L. Laurell, M. Court-payen, S. Nielsen, M. Żak +3 more
2011Pediatric Rheumatology Online Journal18 citations Open access
Semantic Scholar
Cartilage Oligomeric Matrix Protein in Patients with Juvenile Idiopathic Arthritis: Relation to Growth and Disease Activity
B. Bjørnhart, A. Juul, S. Nielsen, M. Żak +2 more
2009Journal of Rheumatology18 citations Open access
Semantic Scholar
Assessment of disease activity in juvenile idiopathic arthritis. The number and the size of joints matter.
L. Berntson, L. Wernroth, A. Fasth, K. Aalto +5 more
2007Journal of Rheumatology18 citations
Semantic Scholar
Non-HLA gene polymorphisms in juvenile idiopathic arthritis: associations with disease outcome
M. Alberdi-Saugstrup, C. Enevold, M. Żak, S. Nielsen +5 more
2017Scandinavian Journal of Rheumatology17 citations
Semantic Scholar
Transitioning patients with juvenile idiopathic arthritis to adult care: the Nordic experience
K. Mikola, K. Rebane, E. Arnstad, L. Berntson +11 more
2022Pediatric Rheumatology Online Journal14 citations Open access
Semantic Scholar
Pediatric-onset multiple sclerosis in Poland: A registry-based retrospective cohort study.
W. Brola, B. Steinborn, M. Niewada, M. Mazurkiewicz-Bełdzińska +26 more
2021Multiple Sclerosis and Related Disorders12 citations Open access
Semantic Scholar
High-sensitive CRP as a predictive marker of long-term outcome in juvenile idiopathic arthritis
M. Alberdi-Saugstrup, M. Żak, S. Nielsen, T. Herlin +6 more
2017Rheumatology International11 citations
Semantic Scholar
Erythrocyte-methotrexate and disease activity in children treated with oral methotrexate for juvenile chronic arthritis.
K. Kristensen, S. Nielsen, F. Pedersen, M. Żak
2000Scandinavian Journal of Rheumatology10 citations
Semantic Scholar
The Clinical and Epidemiological Profile of Paediatric-Onset Multiple Sclerosis in Poland
W. Brola, B. Steinborn, M. Żak, Maria Mazurkiewicz-Bełdzińska +26 more
2022Journal of Clinical Medicine8 citations Open access
Semantic Scholar
Interleukin-1 receptor antagonist in neonates, children and adults, and in patients with pauci- and polyarticular onset juvenile chronic arthritis.
K. Müller, M. Żak, S. Nielsen, F. Pedersen +2 more
1997Clinical and Experimental Rheumatology8 citations
Semantic Scholar
Juvenile Arthritis Disease Activity Score (JADAS) based on CRP; validity and predictive ability in a Nordic population-based setting
E. Nordal, M. Żak, L. Berntson, K. Aalto +7 more
2011Pediatric Rheumatology Online Journal7 citations Open access
Semantic Scholar
Autoantibodies to IL-1 alpha in sera from umbilical cords, children, and adults, and from patients with juvenile chronic arthritis.
K. Müller, M. B. Hansen, M. Żak, Susan Nielsen +3 more
1996Scandinavian Journal of Rheumatology7 citations
Semantic Scholar
Body mass index is associated with health-related quality of life and disease characteristics in young adults with juvenile idiopathic arthritis
Anna-Kaisa Tuomi, K. Rebane, E. Arnstad, L. Berntson +10 more
2024Pediatric Rheumatology Online Journal6 citations Open access
Semantic Scholar
Automated quantification and analysis of facial asymmetry in children with arthritis in the temporomandibular joint
T. Darvann, N. V. Hermann, Sune Demant, P. Larsen +9 more
2011IEEE International Symposium on Biomedical Imaging6 citations
Semantic Scholar
Plasma TNF binding capacity in patients with juvenile idiopathic arthritis.
B. Bjørnhart, P. Svenningsen, S. Gudbrandsdottir, M. Żak +3 more
2005International Immunopharmacology6 citations
Semantic Scholar
Ultrasonography and colour Doppler in juvenile idiopathic arthritis: Diagnosis and follow-up of ultrasound-guided steroid injection in the wrist
L. Laurell, M. Court-payen, S. Nielsen, M. Żak +1 more
2011Pediatric Rheumatology Online Journal4 citations Open access
Semantic Scholar
Early self-reported pain and long-term outcomes in JIA EARLY SELF-REPORTED PAIN IN JUVENILE IDIOPATHIC ARTHRITIS ( JIA ) IS RELATED TO LONG-TERM OUTCOMES . RESULTS FROM THE NORDIC JIA COHORT STUDY
E. Arnstad, V. Rypdal, S. Peltoniemi, T. Herlin +10 more
20183 citations
Semantic Scholar
Age at diagnosis as a prognostic factor in selected categories of juvenile idiopathic arthritis
Anna-Kaisa Tuomi, K. Rebane, E. Arnstad, L. Berntson +10 more
2025RMD Open2 citations Open access
Semantic Scholar
SAT0502 High Participation in School and Physical Education in Children in a Nordic Juvenile Idiopathic Arthritis Cohort
E. Nordal, L. Berntson, K. Aalto, A. Fasth +5 more
20151 citations
Semantic Scholar
Histone antibodies as a biomarker of uveitis in JIA
E. Nordal, L. Berntson, K. Aalto, A. Fasth +5 more
2014Pediatric Rheumatology Online Journal1 citations Open access
Semantic Scholar
Ankle arthritis predicts worse outcome in children with juvenile idiopathic arthritis
Anna-Clara Esbjörnsson, K. Aalto, E. Broström, A. Fasth +6 more
2014Pediatric Rheumatology Online Journal1 citations Open access
Semantic Scholar

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