Pediatric Rheumatology Research Group Publications

  1. Lillegraven S, Paulshus Sundlisæter N, Aga AB, Sexton J, Solomon DH, van der Heijde D, Haavardsholm EA (2023)
    Discontinuation of Conventional Synthetic Disease-Modifying Antirheumatic Drugs in Patients With Rheumatoid Arthritis and Excellent Disease Control
    JAMA, 329 (12), 1024-1026
    DOI 10.1001/jama.2023.0492, PubMed 36976288
  2. Sande NK, Lilleby V, Aga AB, Kirkhus E, Flatø B, Bøyesen P (2023)
    Associations between power Doppler ultrasound findings and B-mode synovitis and clinical arthritis in juvenile idiopathic arthritis using a standardised scanning approach and scoring system
    RMD Open, 9 (1)
    DOI 10.1136/rmdopen-2022-002937, PubMed 36963783
  3. Berger SG, Witczak BN, Reiseter S, Schwartz T, Andersson H, Hetlevik SO, Berntsen KS, Sanner H, Lilleby V, Gunnarsson R, Molberg Ø, Sjaastad I, Stokke MK (2023)
    Cardiac dysfunction in mixed connective tissue disease: a nationwide observational study
    Rheumatol Int, 43 (6), 1055-1065
    DOI 10.1007/s00296-023-05308-3, PubMed 36933069
  4. Kim H, Saygin D, Douglas C, Wilkerson J, Erman B, Pistorio A, McGrath JA, Reed AM, Oddis CV, Bracaglia C, van Royen-Kerkhof A, Bica B, Dolezalova P, Ferriani VPL, Flato B, Bernard-Medina AG, Herlin T, Miller FW, Vencovsky J, Ruperto N, Aggarwal R, Rider LG, International Myositis Assessment and Clinical Studies Group (IMACS) and Paediatric Rheumatology INternational Trials Organization (PRINTO) (2023)
    Performance of the 2016 ACR-EULAR myositis response criteria in juvenile dermatomyositis therapeutic trials and consensus profiles
    Rheumatology (Oxford) (in press)
    DOI 10.1093/rheumatology/kead111, PubMed 36929918
  5. Marstein HS, Witczak BN, Godang K, Olarescu NC, Schwartz T, Flatø B, Molberg Ø, Bollerslev J, Sjaastad I, Sanner H (2023)
    Adipokine profile in long-term juvenile dermatomyositis, and associations with adipose tissue distribution and cardiac function: a cross-sectional study
    RMD Open, 9 (1)
    DOI 10.1136/rmdopen-2022-002815, PubMed 36828644
  6. Bardan I, Fagerli KM, Sexton J, Kvien TK, Bakland G, Mielnik P, Hu Y, Lien G, Flatø B, Molberg Ø, Kristianslund EK, Aga AB (2022)
    Treatment Response to Tumor Necrosis Factor Inhibitors and Methotrexate Monotherapy in Adults With Juvenile Idiopathic Arthritis: Data From NOR-DMARD
    J Rheumatol, 50 (4), 538-547
    DOI 10.3899/jrheum.220645, PubMed 36379571
  7. Podewski AF, Glimm AM, Fischer I, Bruyn GAW, Hanova P, Hammer HB, Aga AB, Haavardsholm EA, Ramiro S, Burmester GR, Backhaus M, Ohrndorf S (2022)
    The MCP2 and the wrist plus two extensor compartments are the most affected and responsive joints/tendons out of the US7 score in patients with rheumatoid arthritis-an observational study
    Arthritis Res Ther, 24 (1), 183
    DOI 10.1186/s13075-022-02874-y, PubMed 35932087
  8. von Brandis E, Zadig PK, Avenarius DFM, Flatø B, Kristian Knudsen P, Lilleby V, Nguyen B, Rosendahl K, Ording Müller LS (2022)
    Whole body magnetic resonance imaging in healthy children and adolescents. Bone marrow appearances of the axial skeleton
    Eur J Radiol, 154, 110425
    DOI 10.1016/j.ejrad.2022.110425, PubMed 35843014
  9. Zadig PK, von Brandis E, Flatø B, Ording Müller LS, Nordal EB, de Horatio LT, Rosendahl K, Avenarius DFM (2022)
    Whole body magnetic resonance imaging in healthy children and adolescents: Bone marrow appearances of the appendicular skeleton
    Eur J Radiol, 153, 110365
    DOI 10.1016/j.ejrad.2022.110365, PubMed 35617871
  10. Marstein HS, Witczak BN, Godang K, Schwartz T, Flatø B, Bollerslev J, Sjaastad I, Sanner H (2023)
    Adipose tissue distribution is associated with cardio-metabolic alterations in adult patients with juvenile-onset dermatomyositis
    Rheumatology (Oxford), 62 (SI2), SI196-SI204
    DOI 10.1093/rheumatology/keac293, PubMed 35575380
  11. Tollisen A, Selvaag AM, Aasland A, Ingebrigtsen T, Sagen J, Lerdal A, Flatø B (2022)
    Personally Generated Quality of Life Outcomes in Adults With Juvenile Idiopathic Arthritis
    J Rheumatol, 49 (10), 1138-1145
    DOI 10.3899/jrheum.211245, PubMed 35569834
  12. Li J, Li YR, Glessner JT, Yang J, March ME, Kao C, Vaccaro CN, Bradfield JP, Li J, Mentch FD, Qu HQ, Qi X, Chang X, Hou C, Abrams DJ, Qiu H, Wei Z, Connolly JJ, Wang F, Snyder J, Flatø B, Thompson SD, Langefeld CD, Lie BA, Munro JE et al. (2022)
    Identification of Novel Loci Shared by Juvenile Idiopathic Arthritis Subtypes Through Integrative Genetic Analysis
    Arthritis Rheumatol, 74 (8), 1420-1429
    DOI 10.1002/art.42129, PubMed 35347896
  13. von Brandis E, Jenssen HB, Avenarius DFM, Bjørnerud A, Flatø B, Tomterstad AH, Lilleby V, Rosendahl K, Sakinis T, Zadig PKK, Müller LO (2022)
    Correction to: Automated segmentation of magnetic resonance bone marrow signal: a feasibility study
    Pediatr Radiol, 52 (6), 1196
    DOI 10.1007/s00247-022-05315-9, PubMed 35192023
  14. von Brandis E, Jenssen HB, Avenarius DFM, Bjørnerud A, Flatø B, Tomterstad AH, Lilleby V, Rosendahl K, Sakinis T, Zadig PKK, Müller LO (2022)
    Automated segmentation of magnetic resonance bone marrow signal: a feasibility study
    Pediatr Radiol, 52 (6), 1104-1114
    DOI 10.1007/s00247-021-05270-x, PubMed 35107593
  15. Paulshus Sundlisæter N, Sundin U, Aga AB, Sexton J, Hammer HB, Uhlig T, Kvien TK, Haavardsholm EA, Lillegraven S (2022)
    Inflammation and biologic therapy in patients with rheumatoid arthritis achieving versus not achieving ACR/EULAR Boolean remission in a treat-to-target study
    RMD Open, 8 (1)
    DOI 10.1136/rmdopen-2021-002013, PubMed 35091463
  16. Witczak BN, Schwartz T, Barth Z, Taraldsrud E, Lund MB, Aaløkken TM, Flatø B, Sjaastad I, Sanner H (2022)
    Associations between cardiac and pulmonary involvement in patients with juvenile dermatomyositis-a cross-sectional study
    Rheumatol Int, 42 (7), 1213-1220
    DOI 10.1007/s00296-021-05071-3, PubMed 34984516
  17. Witczak BN, Bollerslev J, Godang K, Schwartz T, Flatø B, Molberg Ø, Sjaastad I, Sanner H (2022)
    Body composition in long-standing juvenile dermatomyositis: associations with disease activity, muscle strength and cardiometabolic measures
    Rheumatology (Oxford), 61 (7), 2959-2968
    DOI 10.1093/rheumatology/keab805, PubMed 34718443
  18. Hu Y, Rojahn AE, Flatø B (2021)
    [Multisystem inflammatory syndrome in children and adolescents after infection with SARS-CoV-2]
    Tidsskr Nor Laegeforen, 141 (2021-14)
    DOI 10.4045/tidsskr.20.1040, PubMed 34641663
  19. Holten K, Paulshus Sundlisater N, Lillegraven S, Sexton J, Nordberg LB, Moholt E, Hammer HB, Uhlig T, Kvien TK, Haavardsholm EA, Aga AB (2021)
    Fatigue in patients with early rheumatoid arthritis undergoing treat-to-target therapy: predictors and response to treatment
    Ann Rheum Dis, 81 (3), 344-350
    DOI 10.1136/annrheumdis-2021-220750, PubMed 34389605
  20. Paulshus Sundlisater N, Aga AB, Olsen IC, Hammer HB, Uhlig T, van der Heijde D, Kvien TK, Haavardsholm EA, Lillegraven S (2021)
    Joint tenderness and ultrasound inflammation in DMARD-naïve patients with early rheumatoid arthritis
    Ann Rheum Dis, 80 (11), 1493-1494
    DOI 10.1136/annrheumdis-2021-220265, PubMed 34083205
  21. Lillegraven S, Paulshus Sundlisæter N, Aga AB, Sexton J, Olsen IC, Fremstad H, Spada C, Madland TM, Høili CA, Bakland G, Lexberg Å, Hansen IJW, Hansen IM, Haukeland H, Ljoså MA, Moholt E, Uhlig T, Solomon DH, van der Heijde D, Kvien TK, Haavardsholm EA (2021)
    Effect of Half-Dose vs Stable-Dose Conventional Synthetic Disease-Modifying Antirheumatic Drugs on Disease Flares in Patients With Rheumatoid Arthritis in Remission: The ARCTIC REWIND Randomized Clinical Trial
    JAMA, 325 (17), 1755-1764
    DOI 10.1001/jama.2021.4542, PubMed 33944875
  22. Marstein HS, Godang K, Flatø B, Sjaastad I, Bollerslev J, Sanner H (2021)
    Bone mineral density and explanatory factors in children and adults with juvenile dermatomyositis at long term follow-up; a cross sectional study
    Pediatr Rheumatol Online J, 19 (1), 56
    DOI 10.1186/s12969-021-00543-z, PubMed 33902632
  23. Heinicke F, Zhong X, Flåm ST, Breidenbach J, Leithaug M, Mæhlen MT, Lillegraven S, Aga AB, Norli ES, Mjaavatten MD, Haavardsholm EA, Zucknick M, Rayner S, Lie BA (2021)
    MicroRNA Expression Differences in Blood-Derived CD19+ B Cells of Methotrexate Treated Rheumatoid Arthritis Patients
    Front Immunol, 12, 663736
    DOI 10.3389/fimmu.2021.663736, PubMed 33897713
  24. Felbo SK, Wiell C, Østergaard M, Poggenborg RP, Bøyesen P, Hammer HB, Boonen A, Pedersen SJ, Sørensen IJ, Madsen OR, Slot O, Møller JM, Szkudlarek M, Terslev L (2022)
    Do tender joints in active psoriatic arthritis reflect inflammation assessed by ultrasound and magnetic resonance imaging?
    Rheumatology (Oxford), 61 (2), 723-733
    DOI 10.1093/rheumatology/keab384, PubMed 33895799
  25. Sande NK, Bøyesen P, Aga AB, Hammer HB, Flatø B, Roth J, Lilleby V (2021)
    Development and reliability of a novel ultrasonographic joint-specific scoring system for synovitis with reference atlas for patients with juvenile idiopathic arthritis
    RMD Open, 7 (2)
    DOI 10.1136/rmdopen-2021-001581, PubMed 33883255
  26. Sundin U, Sundlisater NP, Aga AB, Sexton J, Nordberg LB, Hammer HB, van der Heijde D, Kvien TK, Haavardsholm EA, Lillegraven S, the ARCTIC Study Group (2021)
    Value of MRI and ultrasound for prediction of therapeutic response and erosive progression in patients with early rheumatoid arthritis managed by an aggressive treat-to-target strategy
    RMD Open, 7 (1)
    DOI 10.1136/rmdopen-2020-001525, PubMed 33547228
  27. Frid P, Baraniya D, Halbig J, Rypdal V, Songstad NT, Rosèn A, Berstad JR, Flatø B, Alakwaa F, Gil EG, Cetrelli L, Chen T, Al-Hebshi NN, Nordal E, Al-Haroni M (2020)
    Salivary Oral Microbiome of Children With Juvenile Idiopathic Arthritis: A Norwegian Cross-Sectional Study
    Front Cell Infect Microbiol, 10, 602239
    DOI 10.3389/fcimb.2020.602239, PubMed 33251163
  28. Frid P, Augdal TA, Larheim TA, Halbig J, Rypdal V, Songstad NT, Rosén A, Tylleskär KB, Berstad JR, Flatø B, Stoustrup P, Rosendahl K, Kirkhus E, Nordal E (2020)
    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
    Pediatr Rheumatol Online J, 18 (1), 75
    DOI 10.1186/s12969-020-00464-3, PubMed 32998740
  29. Malattia C, Ruperto N, Pederzoli S, Palmisani E, Pistorio A, Wouters C, Dolezalova P, Flato B, Garay S, Giancane G, Wells C, Douglass W, Brunner HI, De Benedetti F, Ravelli A, Paediatric Rheumatology International Trials Organisation (PRINTO) and the Pediatric Rheumatology Collaborative Study Group (PRCSG) (2020)
    Tocilizumab may slow radiographic progression in patients with systemic or polyarticular-course juvenile idiopathic arthritis: post hoc radiographic analysis from two randomized controlled trials
    Arthritis Res Ther, 22 (1), 211
    DOI 10.1186/s13075-020-02303-y, PubMed 32912276
  30. Guderud K, Sunde LH, Flåm ST, Mæhlen MT, Mjaavatten MD, Lillegraven S, Aga AB, Evenrød IM, Norli ES, Andreassen BK, Franzenburg S, Franke A, Haavardsholm EA, Rayner S, Gervin K, Lie BA (2020)
    Rheumatoid Arthritis Patients, Both Newly Diagnosed and Methotrexate Treated, Show More DNA Methylation Differences in CD4+ Memory Than in CD4+ Naïve T Cells
    Front Immunol, 11, 194
    DOI 10.3389/fimmu.2020.00194, PubMed 32117312
  31. Norvang V, Brinkmann GH, Yoshida K, Lillegraven S, Aga AB, Sexton J, Tedeschi SK, Lyu H, Norli ES, Uhlig T, Kvien TK, Mjaavatten MD, Solomon DH, Haavardsholm EA, ARCTIC study group, NOR-VEAC study group (2020)
    Achievement of remission in two early rheumatoid arthritis cohorts implementing different treat-to-target strategies
    Arthritis Rheumatol, 72 (7), 1072-1081
    DOI 10.1002/art.41232, PubMed 32090491
  32. Sundin U, Aga AB, Skare Ø, Nordberg LB, Uhlig T, Hammer HB, van der Heijde D, Kvien TK, Lillegraven S, Haavardsholm EA, ARCTIC study group (2020)
    Conventional versus ultrasound treat to target: no difference in magnetic resonance imaging inflammation or joint damage over 2 years in early rheumatoid arthritis
    Rheumatology (Oxford), 59 (9), 2550-2555
    DOI 10.1093/rheumatology/kez674, PubMed 31999341
  33. de Jesus AA, Hou Y, Brooks S, Malle L, Biancotto A, Huang Y, Calvo KR, Marrero B, Moir S, Oler AJ, Deng Z, Montealegre Sanchez GA, Ahmed A, Allenspach E, Arabshahi B, Behrens E, Benseler S, Bezrodnik L, Bout-Tabaku S, Brescia AC, Brown D, Burnham JM, Caldirola MS, Carrasco R, Chan AY et al. (2020)
    Distinct interferon signatures and cytokine patterns define additional systemic autoinflammatory diseases
    J Clin Invest, 130 (4), 1669-1682
    DOI 10.1172/JCI129301, PubMed 31874111
  34. Skjelland M, Zamani M, Hetlevik S, Lilleby V, Halvorsen B, Skagen K (2019)
    Increased Endothelial Activation in Patients with Mixed Connective Tissue Disease
    J Stroke Cerebrovasc Dis, 29 (2), 104563
    DOI 10.1016/j.jstrokecerebrovasdis.2019.104563, PubMed 31831329
  35. Tollisen A, Flatø B, Selvaag AM, Aasland A, Ingebrigtsen T, Sagen J, Lerdal A (2021)
    Treatment Satisfaction With and Adherence to Disease-Modifying Antirheumatic Drugs in Adult Patients With Juvenile Idiopathic Arthritis
    Arthritis Care Res (Hoboken), 73 (2), 221-231
    DOI 10.1002/acr.24113, PubMed 31758669
  36. Berntsen KS, Raastad T, Marstein H, Kirkhus E, Merckoll E, Cumming KT, Flatø B, Sjaastad I, Sanner H (2020)
    Functional and Structural Adaptations of Skeletal Muscle in Long-Term Juvenile Dermatomyositis: A Controlled Cross-Sectional Study
    Arthritis Rheumatol, 72 (5), 837-848
    DOI 10.1002/art.41174, PubMed 31746550
  37. Marstein H, Schwartz T, Aaløkken TM, Lund MB, Flatø B, Sjaastad I, Sanner H (2020)
    Novel associations between cytokines and pulmonary involvement in juvenile dermatomyositis - a cross-sectional study of long-term disease
    Rheumatology (Oxford), 59 (8), 1862-1870
    DOI 10.1093/rheumatology/kez531, PubMed 31740970
  38. Jonsson MK, Kantyka T, Falkowski K, Aliko A, Aga AB, Lillegraven S, Sexton J, Fevang BT, Mydel P, Haavardsholm EA (2019)
    Peptidylarginine deiminase 4 (PAD4) activity in early rheumatoid arthritis
    Scand J Rheumatol, 49 (2), 87-95
    DOI 10.1080/03009742.2019.1641216, PubMed 31544586
  39. Terslev L, Christensen R, Aga AB, Sexton J, Haavardsholm EA, Hammer HB (2019)
    Assessing synovitis in the hands in patients with rheumatoid arthritis by ultrasound: an agreement study exploring the most inflammatory active side from two Norwegian trials
    Arthritis Res Ther, 21 (1), 166
    DOI 10.1186/s13075-019-1930-y, PubMed 31277679
  40. Witczak BN, Hetlevik SO, Sanner H, Barth Z, Schwartz T, Flatø B, Lilleby V, Sjaastad I (2019)
    Effect on Cardiac Function of Longstanding Juvenile-onset Mixed Connective Tissue Disease: A Controlled Study
    J Rheumatol, 46 (7), 739-747
    DOI 10.3899/jrheum.180526, PubMed 30877222
  41. Tollisen A, Selvaag AM, Aasland A, Lerdal A, Flatø B (2019)
    Longitudinal Health Status from Early Disease to Adulthood and Associated Prognostic Factors in Juvenile Idiopathic Arthritis
    J Rheumatol, 46 (10), 1335-1344
    DOI 10.3899/jrheum.180948, PubMed 30877211
  42. Consolaro A, Giancane G, Alongi A, van Dijkhuizen EHP, Aggarwal A, Al-Mayouf SM, Bovis F, De Inocencio J, Demirkaya E, Flato B, Foell D, Garay SM, Lazăr C, Lovell DJ, Montobbio C, Miettunen P, Mihaylova D, Nielsen S, Orban I, Rumba-Rozenfelde I, Magalhães CS, Shafaie N, Susic G, Trachana M, Wulffraat N et al. (2019)
    Phenotypic variability and disparities in treatment and outcomes of childhood arthritis throughout the world: an observational cohort study
    Lancet Child Adolesc Health, 3 (4), 255-263
    DOI 10.1016/S2352-4642(19)30027-6, PubMed 30819662
  43. Skagen K, Hetlevik SO, Zamani M, Lilleby V, Skjelland M (2019)
    Preclinical Carotid Atherosclerosis in Patients With Juvenile-Onset Mixed Connective Tissue Disease
    J Stroke Cerebrovasc Dis, 28 (5), 1295-1301
    DOI 10.1016/j.jstrokecerebrovasdis.2019.01.027, PubMed 30772156
  44. Sundin U, Østergaard M, Glinatsi D, Aga AB, Hørslev-Petersen K, Hetland ML, Stengard-Pedersen K, Junker P, Ejbjerg BJ, Bird P, Conaghan PG, Lillegraven S, Haavardsholm EA (2019)
    Validity and Responsiveness of Combined Inflammation and Combined Joint Damage Scores Based on the OMERACT Rheumatoid Arthritis MRI Scoring System (RAMRIS)
    J Rheumatol, 46 (9), 1222-1227
    DOI 10.3899/jrheum.181064, PubMed 30770509
  45. Hammenfors DS, Valim V, Bica BERG, Pasoto SG, Lilleby V, Nieto-González JC, Silva CA, Mossel E, Pereira RMR, Coelho A, Bootsma H, Thatayatikom A, Brun JG, Jonsson MV (2019)
    Juvenile Sjögren's Syndrome: Clinical Characteristics With Focus on Salivary Gland Ultrasonography
    Arthritis Care Res (Hoboken), 72 (1), 78-87
    DOI 10.1002/acr.23839, PubMed 30697959
  46. Aulie HA, Estensen ME, Selvaag AM, Lilleby V, Flatø B, Aakhus S (2018)
    Arterial properties in adults with long-lasting active juvenile idiopathic arthritis compared to healthy controls
    Pediatr Rheumatol Online J, 16 (1), 85
    DOI 10.1186/s12969-018-0302-5, PubMed 30594204
  47. Nordberg LB, Lillegraven S, Aga AB, Sexton J, Olsen IC, Lie E, Berner Hammer H, Uhlig T, van der Heijde D, Kvien TK, Haavardsholm EA (2018)
    Comparing the disease course of patients with seronegative and seropositive rheumatoid arthritis fulfilling the 2010 ACR/EULAR classification criteria in a treat-to-target setting: 2-year data from the ARCTIC trial
    RMD Open, 4 (2), e000752
    DOI 10.1136/rmdopen-2018-000752, PubMed 30564452
  48. Berntsen KS, Edvardsen E, Hansen BH, Flatø B, Sjaastad I, Sanner H (2019)
    Cardiorespiratory fitness in long-term juvenile dermatomyositis: a controlled, cross-sectional study of active/inactive disease
    Rheumatology (Oxford), 58 (3), 492-501
    DOI 10.1093/rheumatology/key342, PubMed 30508195
  49. Holten K, Sexton J, Kvien TK, Aga AB, Haavardsholm EA (2018)
    Comparative analyses of responsiveness between the Rheumatoid Arthritis Impact of Disease score, other patient-reported outcomes and disease activity measures: secondary analyses from the ARCTIC study
    RMD Open, 4 (2), e000754
    DOI 10.1136/rmdopen-2018-000754, PubMed 30487996
  50. Hetlevik SO, Flatø B, Aaløkken TM, Lund MB, Reiseter S, Mynarek GK, Nordal E, Rygg M, Lilleby V (2018)
    Pulmonary Manifestations and Progression of Lung Disease in Juvenile-onset Mixed Connective Tissue Disease
    J Rheumatol, 46 (1), 93-100
    DOI 10.3899/jrheum.180019, PubMed 30068767
  51. Paulshus Sundlisæter N, Olsen IC, Aga AB, Hammer HB, Uhlig T, van der Heijde D, Kvien TK, Lillegraven S, Haavardsholm EA, ARCTIC study group (2018)
    Predictors of sustained remission in patients with early rheumatoid arthritis treated according to an aggressive treat-to-target protocol
    Rheumatology (Oxford), 57 (11), 2022-2031
    DOI 10.1093/rheumatology/key202, PubMed 30053199
  52. Jonsson MK, Hensvold AH, Hansson M, Aga AB, Sexton J, Mathsson-Alm L, Cornillet M, Serre G, Lillegraven S, Fevang BS, Catrina AI, Haavardsholm EA (2018)
    The role of anti-citrullinated protein antibody reactivities in an inception cohort of patients with rheumatoid arthritis receiving treat-to-target therapy
    Arthritis Res Ther, 20 (1), 146
    DOI 10.1186/s13075-018-1635-7, PubMed 30001740
  53. Barth Z, Schwartz T, Flatø B, Aaløkken TM, Koller A, Lund MB, Sjaastad I, Sanner H (2019)
    Association Between Nailfold Capillary Density and Pulmonary and Cardiac Involvement in Medium to Longstanding Juvenile Dermatomyositis
    Arthritis Care Res (Hoboken), 71 (4), 492-497
    DOI 10.1002/acr.23687, PubMed 29953739
  54. Paulshus Sundlisæter N, Aga AB, Olsen IC, Hammer HB, Uhlig T, van der Heijde D, Kvien TK, Lillegraven S, Haavardsholm EA, ARCTIC study group (2018)
    Clinical and ultrasound remission after 6 months of treat-to-target therapy in early rheumatoid arthritis: associations to future good radiographic and physical outcomes
    Ann Rheum Dis, 77 (10), 1421-1425
    DOI 10.1136/annrheumdis-2017-212830, PubMed 29934373
  55. Flato B, Rygg M, Nordal EB, Røisland M, Ødegård HB, Hoftun GB, Songstad NT, Consolaro A, Bovis F, Ruperto N, Paediatric Rheumatology International Trials Organisation (PRINTO) (2018)
    The Norwegian version of the Juvenile Arthritis Multidimensional Assessment Report (JAMAR)
    Rheumatol Int, 38 (Suppl 1), 291-298
    DOI 10.1007/s00296-018-3963-y, PubMed 29637327
  56. Nordberg LB, Lillegraven S, Aga AB, Sexton J, Lie E, Hammer HB, Olsen IC, Uhlig T, van der Heijde D, Kvien TK, Haavardsholm EA (2018)
    The Impact of Ultrasound on the Use and Efficacy of Intraarticular Glucocorticoid Injections in Early Rheumatoid Arthritis: Secondary Analyses From a Randomized Trial Examining the Benefit of Ultrasound in a Clinical Tight Control Regimen
    Arthritis Rheumatol, 70 (8), 1192-1199
    DOI 10.1002/art.40494, PubMed 29575737
  57. Jonsson MK, Sundlisæter NP, Nordal HH, Hammer HB, Aga AB, van der Heijde D, Kvien TK, Fevang BS, Lillegraven S, Haavardsholm EA (2018)
    Response to: 'Calprotectin is not independent from baseline erosion in predicting radiological progression in early rheumatoid arthritis' by Chevreau et al
    Ann Rheum Dis, 77 (12), e85
    DOI 10.1136/annrheumdis-2017-212869, PubMed 29321158
  58. Reiseter S, Gunnarsson R, Corander J, Haydon J, Lund MB, Aaløkken TM, Taraldsrud E, Hetlevik SO, Molberg Ø (2017)
    Disease evolution in mixed connective tissue disease: results from a long-term nationwide prospective cohort study
    Arthritis Res Ther, 19 (1), 284
    DOI 10.1186/s13075-017-1494-7, PubMed 29268795
  59. Augestad L, Hammarström C, Flatø B, Bjerre A (2017)
    Renal involvement in paediatric systemic vasculitis
    Tidsskr Nor Laegeforen, 137 (19)
    DOI 10.4045/tidsskr.16.0592, PubMed 29043736
  60. Jonsson MK, Sundlisæter NP, Nordal HH, Hammer HB, Aga AB, Olsen IC, Brokstad KA, van der Heijde D, Kvien TK, Fevang BS, Lillegraven S, Haavardsholm EA (2017)
    Calprotectin as a marker of inflammation in patients with early rheumatoid arthritis
    Ann Rheum Dis, 76 (12), 2031-2037
    DOI 10.1136/annrheumdis-2017-211695, PubMed 28814431
  61. Østergaard M, Peterfy CG, Bird P, Gandjbakhch F, Glinatsi D, Eshed I, Haavardsholm EA, Lillegraven S, Bøyesen P, Ejbjerg B, Foltz V, Emery P, Genant HK, Conaghan PG (2017)
    The OMERACT Rheumatoid Arthritis Magnetic Resonance Imaging (MRI) Scoring System: Updated Recommendations by the OMERACT MRI in Arthritis Working Group
    J Rheumatol, 44 (11), 1706-1712
    DOI 10.3899/jrheum.161433, PubMed 28811353
  62. Barth Z, Witczak BN, Flatø B, Koller A, Sjaastad I, Sanner H (2018)
    Assessment of Microvascular Abnormalities by Nailfold Capillaroscopy in Juvenile Dermatomyositis After Medium- to Long-Term Followup
    Arthritis Care Res (Hoboken), 70 (5), 768-776
    DOI 10.1002/acr.23338, PubMed 28805016
  63. Brinkmann GH, Norli ES, Bøyesen P, van der Heijde D, Grøvle L, Haugen AJ, Nygaard H, Bjørneboe O, Thunem C, Kvien TK, Mjaavatten MD, Lie E (2017)
    Role of erosions typical of rheumatoid arthritis in the 2010 ACR/EULAR rheumatoid arthritis classification criteria: results from a very early arthritis cohort
    Ann Rheum Dis, 76 (11), 1911-1914
    DOI 10.1136/annrheumdis-2017-211350, PubMed 28798051
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