[1] PIOH, Hematol & Oncol, Cologne, Germany
[2] Inst Clin Pharmacol, Dresden, Germany
[3] Hannover Med Sch, Dept Neurol, Hannover, Germany
[4] Ruhr Univ Bochum, St Josef Hosp, Dept Neurol, Bochum, Germany
[5] Hosp St Georg, Paediat Rheumatol Immunol & Infectiol, Leipzig, Germany
[6] Tech Univ Dresden, Fac Med, Inst Clin Pharmacol, D-01062 Dresden, Germany
[7] German Rheumatism Res Ctr, Epidemiol, Berlin, Germany
[8] Charite, Rheumatol, Berlin, Germany
[9] Hannover Med Sch, Paediat Pulmonol Allergy & Neonatol, Hannover, NH, Germany