[1] Innsbruck Med Univ, Dept Med Genet Mol & Clin Pharmacol, Div Genet Epidemiol, A-6020 Innsbruck, Austria
[2] GSF Natl Res Ctr Environm & Hlth, Inst Epidemiol, Neuherberg, Germany
[3] Univ Munich, Dept Epidemiol, Munich, Germany
[4] Paracelsus Private Med Univ Salzburg, St Johann Spital, Dept Internal Med 1, Salzburg, Austria
[5] Paracelsus Private Med Univ Salzburg, Dept Neurol, Salzburg, Austria
[6] Tech Univ Munich, Clin Rechts Isar, Inst Med Stat & Epidemiol, D-8000 Munich, Germany
[7] Tech Univ Munich, Clin Rechts Isar, Inst Psychiat & Psychotherapy, D-8000 Munich, Germany