1Division of Mental Health, World Health Organization, CH-1211 Geneva 27, Switzerland
2Hôpital de la Salpêtrière, Paris, France
3Centre for Health Studies, Group Health Cooperative of Puget Sound, Seattle, WA, USA
4Social Psychiatry Research Unit, The Australian National University, Canberra, Australia
5Department of Psychiatry, John Hopkins University, Baltimore, MD, USA
6Psychiatrische Klinik und Poliklinik, Mainz, Germany
7University of Geneva, Geneva, Switzerland