1. Department of Psychiatry, Amsterdam University Medical Centers, , Amsterdam, The Netherlands
2. Department of Health Sciences, Vrije Universiteit Amsterdam, Amsterdam Public Health research institute, Amsterdam, The Netherlands
3. Second Faculty of Medicine, Charles University, Prague, Czech Republic
4. National Institute of Mental Health, Klecany, Czech Republic
5. Department of Geriatric Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
6. School of Health, Saxion University of Applied Sciences, Deventer, The Netherlands
7. Department of Internal Medicine section Geriatrics, Amsterdam University Medical Centers, Amsterdam, The Netherlands