[1] Tech Univ Munich, Psychiat Klin, D-8000 Munich, Germany
[2] Univ Hannover, Forschungsstelle Gesundheitsokon & Gesundheitssys, D-30167 Hannover, Germany
[3] Univ Gottingen, Psychiat Klin, D-3400 Gottingen, Germany
[4] Lilly Deutsch, Homburg, Germany