ASAS Publications

  • Andreasen RA, Kristensen LE, Baraliakos X, Strand V, Mease PJ, de Wit M, Ellingsen T, Hansen I, Kirkham J, Wells, GA, Tugwell P, Maxwell L, Boers M, Egstrup K, Christensen R. Assessing the effect of interventions for axial spondyloarthritis according to the endorsed ASAS/OMERACT core outcome set: a meta-research study of trials included in Cochrane reviews. Arthritis Res Ther. 2020; 22:177
  • Maksymowych WP, Pedersen SJ, Weber U, Baraliakos X, Machado PM, Eshed I, de Hooge M, Sieper J, Wichuk S, Rudwaleit M, van der Heijde D, Landewé R, Poddubnyy D, Ostergaard M, Lambert R. Central reader evaluation of MRI scans of the sacroiliac joints from the ASAS classification cohort: discrepancies with local readers and impact on the performance of the ASAS criteria. Ann Rheum Dis. 2020;79:935–942
  • Arévalo M, López-Medina C, Martinez-Losa  MM, Moltó A, Font P, Collantes-Estevez E, Gratacós J.  Role of HLA-B27 in the comorbidities observed in Axial Spondyloarthritis: Data from COMOSPA. Joint Bone Spine. 2020; [Epub ahead of print]
  • Stolwijk C, Essers I, van den Bosch F, Dougados M, Etcheto A, van der Heijde D, Landewé R, Molto A, van Tubergen A, Boonen A. Validation of the self-administered comorbidity questionnaire adjusted for spondyloarthritis: results from the ASAS-COMOSPA study.
    Rheumatology (Oxford). 2019. [Epub ahead of print]
  • Kiltz U, Landewé RBM, van der Heijde D, Rudwaleit M, Weisman MH, Akkoc N, Boonen A, Brandt J, Carron P, Dougados M, Gossec L, Jongkees M, Machado PM, Marzo-Ortega H, Molto A, Navarro-Compán V, Niederman K, Sampaio-Barros PD, Slobodin G, Van den Bosch FE, van Tubergen A, van Weely S, Wiek D, Braun J. Development of ASAS quality standards to improve the quality of health and care services for patients with axial spondyloarthritis. Ann Rheum Dis. 2019. [Epub ahead of print].
  • Maksymowych WP, Lambert RG, Østergaard M, Pedersen SJ, Machado PM, Weber U, Bennett AN, Braun J, Burgos-Vargas R, de Hooge M, Deodhar AA, Eshed I, Jurik AG, Hermann KA, Landewé RB, Marzo-Ortega H, Navarro-Compán V, Poddubnyy D, Reijnierse M, Rudwaleit M, Sieper J, Van den Bosch FE, van der Heijde D, van der Horst-Bruinsma IE, Wichuk S, Baraliakos X. MRI lesions in the sacroiliac joints of patients with spondyloarthritis: an update of definitions and validation by the ASAS MRI working group. Ann Rheum Dis. 2019;78:1550-1558.
  • Boel A, Molto A, van der Heijde D, Ciurea A, Dougados M, Gensler LS, Santos MJ, De Miguel E, Poddubnyy D, Rudwaleit M, van Tubergen A, van Gaalen FA, Ramiro S. Do patients with axial spondyloarthritis with radiographic sacroiliitis fulfil both the modified New York criteria and the ASAS axial spondyloarthritis criteria? Results from eight cohorts. Ann Rheum Dis. 2019;78:1545-1549.
  • Essers I, Hiligsmann M, Kiltz U, Bansback N, Braun J, van der Heijde D, Boonen A. Development of one general and six country-specific algorithms to assess societal health utilities based on ASAS HI. RMD Open. 2019;5:e000872. (Open Access)
  • López-Medina C, Moltó A, Dougados M. Peripheral Manifestations in Spondyloarthritis and their Effect: An Ancillary Analysis of the ASAS-COMOSPA Study. J Rheumatol. 2019. [Epub ahead of print].
  • Derakhshan MH, Goodson NJ, Packham J, Sengupta R, Molto A, Marzo-Ortega H, Siebert S; BRITSpA and the ASAS-COMOSPA Investigators. Association of Diverticulitis with Prolonged Spondyloarthritis: An Analysis of the ASAS-COMOSPA International Cohort. J Clin Med. 2019;8:281. (Open Access)
  • Putrik P, Ramiro S, Moltó A, Keszei AP, Norton S, Dougados M, van der Heijde D, Landewé RBM, Boonen A. Individual-level and country-level socioeconomic determinants of disease outcomes in SpA: multinational, cross-sectional study (ASAS-COMOSPA). Ann Rheum Dis. 2019;78:486-493.
  • Derakhshan MH, Goodson NJ, Packham JC, Sengupta R, Molto A, Marzo-Ortega H, Siebert S; BRITSpA and COMOSPA Investigators. Increased Risk of Hypertension Associated with Spondyloarthritis Disease Duration: Results from the ASAS-COMOSPA Study. J Rheumatol. 2019;46:701-709.
  • Sepriano A, Ramiro S, Landewé R, Dougados M, van der Heijde D, Rudwaleit M. Is active sacroiliitis on MRI associated with radiographic damage in axial spondyloarthritis? Real-life data from the ASAS and DESIR cohorts. Rheumatology (Oxford). 2019;58:798-802.
  • Navarro-Compan V, Oton T, Loza E, Almodovar R, Ariza-Ariza R, Bautista-Molano W, Burgos-Vargas R, Collantes-Estevez E, de Miguel E, Gonzalez-Fernandez C, Gratacos J, Ibanez S, Juanola X, Maldonado-Cocco J, Molto A, Mulero J, Pacheco-Tena C, Ramos-Remus C, Sanz-Sanz J, Valle-Onate R, Zarco P, Marzo-Ortega H. Assessment of SpondyloArthritis International Society (ASAS) Consensus on Spanish Nomenclature for Spondyloarthritis. Reumatologia clinica. 2018. [E-Pub ahead of Print].
  • van Lunteren M, Sepriano A, Landewé R, Sieper J, Rudwaleit M, van der Heijde D, van Gaalen F. Do ethnicity, degree of family relationship, and the spondyloarthritis subtype in affected relatives influence the association between a positive family history for spondyloarthritis and HLA-B27 carriership? Results from the worldwide ASAS cohort. Arthritis Res Ther. 2018;20:166. (Open Access)
  • Rodrigues Manica S, Sepriano A, Ramiro S, Pimentel Santos F, Putrik P, Nikiphorou E, Norton S, Molto A, Dougados M, van der Heijde D, Landewé RBM, van den Bosch FE, Boonen A. Work participation in spondyloarthritis across countries: analysis from the ASAS-COMOSPA study. Ann Rheum Dis. 2018;77:1303-1310.
  • Kiltz U, van der Heijde D, Boonen A, Akkoc N, Bautista-Molano W, Burgos-Vargas R, Wei JC, Chiowchanwisawakit P, Dougados M, Duruoz MT, Elzorkany BK, Gaydukova I, Gensler LS, Gilio M, Grazio S, Gu J, Inman RD, Kim TJ, Navarro-Compan V, Marzo-Ortega H, Ozgocmen S, Pimentel Dos Santos F, Schirmer M, Stebbings S, Van den Bosch FE, van Tubergen A, Braun J. Measurement properties of the ASAS Health Index: results of a global study in patients with axial and peripheral spondyloarthritis. Ann Rheum Dis. 2018;77:1311-1317.
  • Couderc M, Pereira B, Molto A, Tiple A, Soubrier M, Dougados M. The Prevalence of Renal Impairment in Patients With Spondyloarthritis: Results From the International ASAS-COMOSPA Study. J Rheumatol 2018;45:795-801
  • Machado PM, Landewé R, van der Heijde D, Assessment of SpondyloArthritis international Society (ASAS). Ankylosing Spondylitis Disease Activity Score (ASDAS): 2018 update of the nomenclature for disease activity states. Ann Rheum Dis. 2018;77:1539-1540 (Toll-Free Link).
  • Bautista-Molano W, Landewé R, Burgos-Vargas R, Maldonado-Cocco J, Moltó A, van den Bosch F, Valle-Oñate R, Dougados M, van der Heijde D. Prevalence of Comorbidities and Risk Factors for Comorbidities in Patients with Spondyloarthritis in Latin America: A Comparative Study with the General Population and Data from the ASAS-COMOSPA Study. J Rheumatol. 2018;45:206-12.
  • Nikiphorou E, van der Heijde D, Norton S, Landewé RB, Molto A, Dougados M, Van den Bosch FE, Ramiro S. Inequity in biological DMARD prescription for spondyloarthritis across the globe: results from the ASAS-COMOSPA study. Ann Rheum Dis. 2018;77:405-11.
  • Fernandes S, Etcheto A, van der Heijde D, Landewé R, van den Bosch F, Dougados M, Moltó A. Vitamin D status in spondyloarthritis: results of the ASAS-COMOSPA international study. Clin Exp Rheumatol. 2018;36:210-214.
  • Nikiphorou E, Ramiro S, van der Heijde D, Norton S, Moltó A, Dougados M, van den Bosch F, Landewé R; ASAS-COMOSPA Task Force. Comorbidities in Spondyloarthritis associate with poor function, work disability and quality of life: Results from the ASAS-COMOSPA study. Arthritis Care Res (Hoboken). 2018;70:1257-1262.
  • Molto A, Gossec L, Meghnathi B, Landewé RBM, van der Heijde D, Atagunduz P, Elzorkany BK, Akkoc N, Kiltz U, Gu J, Wei JCC, Dougados M; ASAS-FLARE study group. An Assessment in SpondyloArthritis International Society (ASAS)-endorsed definition of clinically important worsening in axial spondyloarthritis based on ASDAS. Ann Rheum Dis. 2018;77:124-7. (Toll-Free Link)
  • López-Medina C, Jiménez-Gómez Y, Moltó A, Schiotis RE, Marzo-Ortega H, van Gaalen FA, Ozgocmen S, Dougados M, Calvo-Gutiérrez J, Castro-Villegas MC, Collantes-Estévez E, Font-Ugalde P; ASAS-COMOSPA task force. Cardiovascular risk factors in patients with spondyloarthritis from Northern European and Mediterranean countries: An ancillary study of the ASAS-COMOSPA project. Joint Bone Spine. 2018;85:447-453.
  • Regel A, Sepriano A, Baraliakos X, van der Heijde D, Braun J, Landewé R, Van den Bosch F, Falzon L, Ramiro S. Efficacy and safety of non-pharmacological and non-biological pharmacological treatment: a systematic literature review informing the 2016 update of the ASAS/EULAR recommendations for the management of axial spondyloarthritis. RMD Open. 2017 Jan 27;3(1):e000397. (Open Access)
  • Sepriano A, Regel A, van der Heijde D, Braun J, Baraliakos X, Landewé R, Van den Bosch F, Falzon L, Ramiro S. Efficacy and safety of biological and targeted-synthetic DMARDs: a systematic literature review informing the 2016 update of the ASAS/EULAR recommendations for the management of axial spondyloarthritis. RMD Open. 2017 Jan 27;3(1):e000396. (Open Access)
  • van der Heijde D, Ramiro S, Landewé R, Baraliakos X, Van den Bosch F, Sepriano A, Regel A, Ciurea A, Dagfinrud H, Dougados M, van Gaalen F, Géher P, van der Horst-Bruinsma I, Inman RD, Jongkees M, Kiltz U, Kvien TK, Machado PM, Marzo-Ortega H, Molto A, Navarro-Compàn V, Ozgocmen S, Pimentel-Santos FM, Reveille J, Rudwaleit M, Sieper J, Sampaio-Barros P, Wiek D, Braun J. 2016 update of the ASAS-EULAR management recommendations for axial spondyloarthritis. Ann Rheum Dis. 2017;76:978-91. (Open Access)
  • Sepriano A, Rubio R, Ramiro S, Landewé R, van der Heijde D. Performance of the ASAS classification criteria for axial and peripheral spondyloarthritis: a systematic literature review and meta-analysis. Ann Rheum Dis. 2017;76:886-890. (Toll-Free Link)
  • Kiltz U, van der Heijde D, Boonen A, Bautista-Molano W, Burgos-Vargas R, Chiowchanwisawakit P, Duruoz T, El-Zorkany B, Essers I, Gaydukova I, Géher P, Gossec L, Grazio S, Gu J, Khan MA, Kim TJ, Maksymowych WP, Marzo-Ortega H, Navarro-Compán V, Olivieri I, Patrikos D, Pimentel-Santos FM, Schirmer M, van den Bosch F, Weber U, Zochling J, Braun J. Measuring impairments of functioning and health in patients with axial spondyloarthritis by using the ASAS Health Index and the Environmental Item Set: translation and cross-cultural adaptation into 15 languages. RMD Open. 2016 Oct 4;2(2):e000311. (Open Access)
  • Sepriano A, Landewé R, van der Heijde D, Sieper J, Akkoc N, Brandt J, Braun J, Collantes-Estevez E, Dougados M, Fitzgerald O, Huang F, Gu J, Kirazli Y, Maksymowych WP, Marzo-Ortega H, Olivieri I, Ozgocmen S, Roussou E, Scarpato S, Sørensen IJ, Valle-Oñate R, Van den Bosch F, van der Horst-Bruinsma I, Weber U, Wei J, Rudwaleit M; ASAS. Predictive validity of the ASAS classification criteria for axial and peripheral spondyloarthritis after follow-up in the ASAS cohort: a final analysis. Ann Rheum Dis. 2016;75:1034-42. (Toll-Free Link)
  • Gossec L, Portier A, Landewé R, Etcheto A, Navarro-Compán V, Kroon F, van der Heijde D, Dougados M. Preliminary definitions of ‘flare’ in axial spondyloarthritis, based on pain, BASDAI and ASDAS-CRP: an ASAS initiative. Ann Rheum Dis. 2016;75:991-6. (Open Access)
  • Lambert RG, Bakker PA, van der Heijde D, Weber U, Rudwaleit M, Hermann KG, Sieper J, Baraliakos X, Bennett A, Braun J, Burgos-Vargas R, Dougados M, Pedersen SJ, Jurik AG, Maksymowych WP, Marzo-Ortega H, Østergaard M, Poddubnyy D, Reijnierse M, van den Bosch F, van der Horst-Bruinsma I, Landewé R. Defining active sacroiliitis on MRI for classification of axial spondyloarthritis: update by the ASAS MRI working group. Ann Rheum Dis. 2016;75:1958-1963. (Toll-Free Link)
  • Moltó A, Etcheto A, van der Heijde D, Landewé R, van den Bosch F, Bautista Molano W, Burgos-Vargas R, Cheung PP, Collantes-Estevez E, Deodhar A, El-Zorkany B, Erdes S, Gu J, Hajjaj-Hassouni N, Kiltz U, Kim TH, Kishimoto M, Luo SF, Machado PM, Maksymowych WP, Maldonado-Cocco J, Marzo-Ortega H, Montecucco CM, Ozgoçmen S, van Gaalen F, Dougados M. Prevalence of comorbidities and evaluation of their screening in spondyloarthritis: results of the international cross-sectional ASAS-COMOSPA study. Ann Rheum Dis. 2016;75:1016-23. (Toll-Free Link)
  • Kiltz U, van der Heijde D, Boonen A, Cieza A, Stucki G, Khan MA, Maksymowych WP, Marzo-Ortega H, Reveille J, Stebbings S, Bostan C, Braun J. Development of a health index in patients with ankylosing spondylitis (ASAS HI): final result of a global initiative based on the ICF guided by ASAS. Ann Rheum Dis 2015;74:830-5. (Toll-Free Link)
  • Poddubnyy D, van Tubergen A, Landewé R, Sieper J, van der Heijde D, On behalf of the Assessment of SpondyloArthritis international Society (ASAS). Development of an ASAS-endorsed recommendation for the early referral of patients with a suspicion of axial spondyloarthritis. Ann Rheum Dis 2015;74:1483-7. (Toll-Free Link)
  • Bautista-Molano W, Navarro-Compán V, Landewé RB, Boers M, Kirkham JJ, van der Heijde D. How well are the ASAS/OMERACT Core Outcome Sets for Ankylosing Spondylitis implemented in randomized clinical trials? A systematic literature review. Clin Rheumatol. 2014;33:1313-22
  • Kiltz U, van der Heijde D, Boonen A, Braun J. The ASAS Health Index (ASAS HI) – a new tool to assess the health status of patients with spondyloarthritis. Clin Exp Rheumatol. 2014;32:S-105-8
  • van den Berg R, de Hooge M, Rudwaleit M, Sieper J, van Gaalen F, Reijnierse M, Landewé R, Huizinga T, van der Heijde D. ASAS modification of the Berlin algorithm for diagnosing axial spondyloarthritis: results from the SPondyloArthritis Caught Early (SPACE)-cohort and from the Assessment of SpondyloArthritis international Society (ASAS)-cohort. Ann Rheum Dis 2013;72:1646-53. (Toll-Free Link)
  • Hermann KG, Baraliakos X, van der Heijde DM, Jurik AG, Landewé R, Marzo-Ortega H, Østergaard M, Rudwaleit M, Sieper J, Braun J. Assessment in SpondyloArthritis international Society (ASAS). Descriptions of spinal MRI lesions and definition of a positive MRI of the spine in axial spondyloarthritis: a consensual approach by the ASAS/OMERACT MRI study group. Ann Rheum Dis 2012;71:1278-88. (Toll-Free Link)
  • van den Berg R, Baraliakos X, Braun J, van der Heijde D. First update of the current evidence for the management of ankylosing spondylitis with non-pharmacological treatment and non-biologic drugs: a systematic literature review for the ASAS/EULAR management recommendations in ankylosing spondylitis. Rheumatology (Oxford). 2012;51:1388-96. (Open Access)
  • Baraliakos X, van den Berg R, Braun J, van der Heijde D. Update of the literature review on treatment with biologics as a basis for the first update of the ASAS/EULAR management recommendations of ankylosing spondylitis. Rheumatology (Oxford). 2012 Aug;51(8):1378-87. (Open Access)
  • Dougados M, Braun J, Vargas RB, Gossec L, Maksymowych W, Sieper J, van der Heijde D. ASAS recommendations for variables to be collected in clinical trials/epidemiological studies of spondyloarthritis. Ann Rheum Dis 2012;71:1103-4. (Toll-Free Link)
  • Aydin SZ, Maksymowych WP, Bennett AN, McGonagle D, Emery P, Marzo-Ortega H. Validation of the ASAS criteria and definition of a positive MRI of the sacroiliac joint in an inception cohort of axial spondyloarthritis followed up for 8 years. Ann Rheum Dis. 2012;71:56-60.
  • van der Heijde D, Sieper J, Maksymowych WP, Dougados M, Burgos-Vargas R, Landewé R, Rudwaleit M, Braun J. Assessment of SpondyloArthritis international Society. 2010 Update of the international ASAS recommendations for the use of anti-TNF agents in patients with axial spondyloarthritis. Ann Rheum Dis 2011 Jun;70(6):905-8. (Toll-Free Link)
  • Machado P, Landewé R, Lie E, Kvien TK, Braun J, Baker D, van der Heijde D, for the Assessment of Spondyloarthritis International Society. Ankylosing Spondylitis Disease Activity Score (ASDAS): Defining cut off levels for disease activity states and improvement scores. Ann Rheum Dis 2011:70:47-53. (Toll-Free Link)
  • Braun J, van den Berg R, Baraliakos X, Boehm H, Burgos-Vargas R, Collantes-Estevez E, Dagfinrud H, Dijkmans B, Dougados M, Emery P, Geher P, Hammoudeh M, Inman RD, Jongkees M, Khan MA, Kiltz U, Kvien T, Leirisalo-Repo M, Maksymowych WP, Olivieri I, Pavelka K, Sieper J, Stanislawska-Biernat E, Wendling D, Ozgocmen S, van Drogen C, van Royen B, van der Heijde D. 2010 update of the ASAS/EULAR recommendations for the management of ankylosing spondylitis. Ann Rheum Dis 2011;70:896-904. (Open Access)
  • Dougados M, Simon P, Braun J, Burgos-Vargas R, Maksymowych WP, Sieper J, van der Heijde D. ASAS recommendations for collecting, analysing and reporting NSAID intake in clinical trials/epidemiological studies in axial spondyloarthritis. Ann Rheum Dis 2011;70:249-51.(Toll-Free Link)
  • Rudwaleit M, van der Heijde D, Landewé R, Akkoc N, Brandt J, Chou CT, Dougados M, Huang F, Gu J, Kirazli Y, Van den Bosch F, Olivieri I, Roussou E, Scarpato S, Sørensen IJ, Valle-Oñate R, Weber U, Wei J, Sieper J. The Assessment of SpondyloArthritis International Society classification criteria for peripheral spondyloarthritis and for spondyloarthritis in general. Ann Rheum Dis 2011;70:25-31. (Open Access)
  • Rudwaleit M, Jurik AG, Hermann KG, Landewé R, van der Heijde D, Baraliakos X, Marzo-Ortega H, Ostergaard M, Braun J, Sieper J. Defining active sacroiliitis on magnetic resonance imaging (MRI) for classification of axial spondyloarthritis: a consensual approach by the ASAS/OMERACT MRI group. Ann Rheum Dis 2009;68:1520-7 (Toll-Free Link).
  • Rudwaleit M, van der Heijde D, Landewé R, Listing J, Akkoc N, Brandt J, Braun J, Chou CT, Collantes-Estevez E, Dougados M, Huang F, Gu J, Khan MA, Kirazli Y, Maksymowych WP, Mielants H, Sørensen IJ, Ozgocmen S, Roussou E, Valle-Oñate R, Weber U, Wei J, Sieper J. The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection. Ann Rheum Dis 2009;68:777-83 (Open Access).
  • Rudwaleit M, Landewé R, van der Heijde D, Listing J, Brandt J, Braun J, Burgos-Vargas R, Collantes-Estevez E, Davis J, Dijkmans J, Dougados M, Emery P., van der Horst-Bruinsma IE, Inman R, Khan MA, Leirisario-Repo M, van der Linden S, Maksymowych WP, Mielants H, Olivieri I, Sturrock R, de Vlan K, Sieper J. The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part I): classification of paper patients by expert opinion including uncertainty appraisal.
    Ann Rheum Dis 2009;68:770-76.
  • Boonen A, Braun J, van der Horst Bruinsma IE, Huang F, Maksymowych W, Kostanjsek N, Cieza A, Stucki G, van der Heijde D. ASAS/WHO ICF Core Sets for ankylosing spondylitis (AS): how to classify the impact of AS on functioning and health. Ann Rheum Dis. 2010;69:102-7.
  • Sieper J, van der Heijde D, Landewé R, Brandt J, Burgos-Vagas R, Collantes-Estevez E, Dijkmans B, Dougados M, Khan MA, Leirisalo-Repo M, van der Linden S, Maksymowych WP, Mielants H, Olivieri I, Rudwaleit M. New criteria for inflammatory back pain in patients with chronic back pain: a real patient exercise by experts from the Assessment of SpondyloArthritis international Society (ASAS). Ann Rheum Dis 2009;68:784-8. (Toll-Free Link)
  • van der Heijde D, Lie E, Kvien TK, Sieper J, Van den Bosch F, Listing J, Braun J, Landewé R; Assessment of SpondyloArthritis international Society (ASAS). ASDAS, a highly discriminatory ASAS-endorsed disease activity score in patients with ankylosing spondylitis. Ann Rheum Dis 2009;68:1811-8. (Toll-Free Link)
  • Kiltz U, van der Heijde D, Mielants H, Feldtkeller E, Braun J; PARE/EULAR patient initiative group. ASAS/EULAR recommendations for the management of ankylosing spondylitis: the patient version. Ann Rheum Dis. 2009;68:1381-6. (Open Access)
  • Lukas C, Landewé R, Sieper J, Dougados M, Davis J, Braun J, van der Linden S, van der Heijde D; Assessment of SpondyloArthritis international Society. Development of an ASAS-endorsed disease activity score (ASDAS) in patients with ankylosing spondylitis. Ann Rheum Dis. 2009;68:18-24. (Toll-Free Link)
  • Gossec L, Dougados M, Phillips C, Hammoudeh M, de Vlam K, Pavelka K, Pham T, Braun J, Sieper J, Olivieri I, van der Heijde D, Collantes E, Stone M, Kvien TK; ASAS (ASsessment in AS international working group). Dissemination and evaluation of the ASAS/EULAR recommendations for the management of ankylosing spondylitis: results of a study among 1507 rheumatologists. Ann Rheum Dis. 2008;67:782-8. (Toll-Free Link)
  • Lukas C, Braun J, van der Heijde D, Hermann KG, Rudwaleit M, Østergaard M, Oostveen A, O’Connor P, Maksymowych WP, Lambert RG, Jurik AG, Baraliakos X, Landewé R; ASAS/OMERACT MRI in AS Working Group. Scoring inflammatory activity of the spine by magnetic resonance imaging in ankylosing spondylitis: a multireader experiment. J Rheumatol. 2007;34:862-70.
  • Zochling J, van der Heijde D, Dougados M, Braun J. Current evidence for the management of ankylosing spondylitis: a systematic literature review for the ASAS/EULAR management recommendations in ankylosing spondylitis. Ann Rheum Dis. 2006;65:423-32. (Open Access)
  • Zochling J, van der Heijde D, Burgos-Vargas R, Collantes E, Davis JC Jr, Dijkmans B, Dougados M, Géher P, Inman RD, Khan MA, Kvien TK, Leirisalo-Repo M, Olivieri I, Pavelka K, Sieper J, Stucki G, Sturrock RD, van der Linden S, Wendling D, Böhm H, van Royen BJ, Braun J; ‘ASsessment in AS’ international working group; European League Against Rheumatism. ASAS/EULAR recommendations for the management of ankylosing spondylitis. Ann Rheum Dis. 2006;65:442-52. (Open Access)
  • Braun J, Davis J, Dougados M, Sieper J, van der Linden S, van der Heijde D; ASAS Working Group. First update of the international ASAS consensus statement for the use of anti-TNF agents in patients with ankylosing spondylitis. Ann Rheum Dis. 2006;65:316-20.
  • van der Heijde D, Braun J, Landewé R, Davis J, Sieper J, van der Linden S, Dougados M. ASessment in Ankylosing Spondylitis (ASAS) international working group: a model for psoriatic arthritis and psoriasis? Ann Rheum Dis. 2005;64 Suppl 2:ii108-9. (Open Access)
  • Brandt J, Listing J, Sieper J, Rudwaleit M, van der Heijde D, Braun J. Development and preselection of criteria for short term improvement after anti-TNF alpha treatment in ankylosing spondylitis. Ann Rheum Dis. 2004;63:1438-44. (Open Access)
  • Braun J, Pham T, Sieper J, Davis J, van der Linden S, Dougados M, van der Heijde D; ASAS Working Group. International ASAS consensus statement for the use of anti-tumour necrosis factor agents in patients with ankylosing spondylitis. Ann Rheum Dis. 2003;62:817-24. (Open Access)
  • Pham T, van der Heijde D, Calin A, Khan MA, van der Linden S, Bellamy N, Dougados M; ASAS Working Group. Initiation of biological agents in patients with ankylosing spondylitis: results of a Delphi study by the ASAS Group. Ann Rheum Dis. 2003;62:812-6. (Open Access)
  • van Tubergen A, van der Heijde D, Anderson J, Landewé R, Dougados M, Braun J, Bellamy N, Udrea G, van der Linden S. Comparison of statistically derived ASAS improvement criteria for ankylosing spondylitis with clinically relevant improvement according to an expert panel.
    Ann Rheum Dis. 2003;62:215-21. (Open Access)
  • Anderson JJ, Baron G, van der Heijde D, Felson DT, Dougados M. Ankylosing Spondylitis Assessment Group Preliminary Definition of Short-Term Improvement in Ankylosing Spondylitis. Arthritis Rheum 2001;44:1876-86. (Open Access)
  • van der Heijde D, van der Linden S, Dougados M, Bellamy N, Russell AS, Edmonds J. Ankylosing spondylitis: plenary discussion and results of voting on selection of domains and some specific instruments. J Rheumatol. 1999;26:1003-5. (Toll-Free Link)
  • van der Heijde D, van der Linden S, Bellamy N, Calin A, Dougados M, Khan MA. Which domains should be included in a core set for endpoints in ankylosing spondylitis? Introduction to the ankylosing spondylitis module of OMERACT IV. J Rheumatol. 1999;26:945-7 (Toll-Free Link).