1. Institute of Neuroscience and Physiology, Psychiatry Section; The Sahlgrenska Academy, University of Gothenburg; Gothenburg; Sweden
2. Department of Epidemiology and Biostatistics, Longitudinal Aging Study Amsterdam; VU University Medical Centre, EMGO + Institute for Health and Care Research; Amsterdam; The Netherlands
3. Roseneck Hospital for Behavioral Medicine and Department of Psychiatry; University of Munich (LMU); Munich; Germany
4. Department of Psychiatry, Jonathan Swift Clinic; St. James' Hospital; Dublin; Ireland
5. Servicio de Psicomática; Universidad de Zaragoza; Zaragoza; Spain
6. Psychiatrische Klinik und Poliklinik; Freie Universität Berlin; Berlin; Germany
7. Section of Old Age Psychiatry, Department of Psychiatry; University of Liverpool; Liverpool; UK