1. Department of Psychiatry, Institute for Research in Extramural Medicine and Alzheimer Centre, Vrije Universiteit medical centre, Amsterdam,
2. Department of Psychiatry, Institute for Research in Extramural Medicine and Alzheimer Centre, Vrije Universiteit medical centre, Amsterdam
3. Trimbos-institute, The Netherlands Institute of Mental Health and Addiction, Utrecht
4. Centre for Quality of Care Research, University Medical Centre St. Radboud, Nijmegen
5. Department of Psychiatry, Institute for Research in Extramural Medicine, VU medical centre, Amsterdam