[1] German MS Registry, IMS Forsch & Projektentwicklungs gGmbH, Hannover, Germany
[2] German MS Registry, Gesell Versorgungsforsch mbH Soc Hlth Care Res GV, Hannover, Germany
[3] Univ Hosp Essen, Dept Neurol & Ctr Translat & Behav Neurosci, Essen, Germany
[4] Ruhr Univ, St Josef Hosp, Dept Neurol, Bochum, Germany
[5] Univ Med Ctr Gottingen, Dept Med Stat, Gottingen, Germany
[6] Max Delbrueck Ctr Mol Med, Expt & Clin Res Ctr, Berlin, Germany
[7] Charite Univ Med Berlin, Berlin, Germany
[8] Univ Hosp Cologne, Fac Med, Dept Neurol, Cologne, Germany
[9] Neurol Rehabil Ctr Quellenhof, Bad Wildbad, Germany
[10] German Multiple Sclerosis Soc DMSG, Deutsch Multiple Sklerose Gesellschaft Bundesverb, Hannover, Germany
[11] Univ Med Ctr Rostock, Neuroimmunol Sect, Dept Neurol, Rostock, Germany