[1] Deutsch Rheuma Forschungszentrum Julich Berlin, Inst Leibniz Gemeinschaft, Programme Area Epidemiol, Hlth Serv Res, Charitepl 1, D-10117 Berlin, Germany
[2] St Josef Stift Sendenhorst, Northwest German Ctr Rheumatol, Clin Paediat & Adolescent Rheumatol, Sendenhorst, Germany
[3] Charite Univ Med Berlin, Dept Paediat Resp Med Immunol & Crit Care Med, Berlin, Germany
[4] Free Univ Berlin, Berlin, Germany
[5] Humboldt Univ, Berlin, Germany
[6] Hannover Med Sch, Childrens Hosp, Dept Paediat Pneumol Allergol & Neonatol, Hannover, Germany
[7] HELIOS Klin, Dept Paediat Paediat & Adolescent Rheumatol, Berlin, Germany
[8] Univ Ulm, Inst Epidemiol & Med Biometry, ZIBMT, Ulm, Germany
[9] Schon Klin Hamburg Eilbek, Hamburg Ctr Paediat & Adolescent Rheumatol, Hamburg, Germany
[10] Tech Univ Dresden, Carl Gustav Carus Univ Hosp, Dept Paediat, Dresden, Germany
[11] Klinikum Stuttgart, Dept Paediat, Olgahos, Stuttgart, Germany
[12] Univ Potsdam, Dept Psychol, Potsdam, Germany
[13] Childrens Hosp St Marien, Pediat Rheumatol, Landshut, Germany
[14] Univ Hosp Tuebingen, Autoinflammat Reference Ctr Tuebingen arcT, Dept Pediat, Div Pediat Rheumatol,ERN RITA, Tubingen, Germany
[15] Klinikum Bremen Mitte, Eltern Kind Zentrum Prof Hess, Dept Pediat & Adolescent Med, Pediat Rheumatol, Bremen, Germany
[16] German Ctr Paediat & Adolescent Rheumatol, Garmisch Partenkirchen, Germany
[17] Ulm Univ, Dept Psychiat & Psychotherapy 2, Ulm, Germany
[18] Ulm Univ, Inst Psychol & Educ, Fac Engn Comp Sci & Psychol, Dept Clin Psychol & Psychotherapy, Ulm, Germany
[19] Heinrich Heine Univ, Univ Hosp Dusseldorf, Med Fac, Dept Gen Paediat Neonatol & Paediat Cardiol, Dusseldorf, Germany
[20] Univ Halle Wittenberg, Med Fak, Halle, Germany
[21] Deutsch Rheuma Forschungszentrum Julich Berlin, Inst Leibniz Gemeinschaft, Programme Area Syst Rheumatol, Berlin, Germany
[22] German Ctr Diabet Res DZD, Munich, Germany