1. Department of Clinical-, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, 1081 BT, Netherlands
2. Department of old age psychiatry, Altrecht specialists in Mental Health Care, Zeist, 3705 WH, Netherlands
3. GGZ-VS, Academy for Clinical Nurse Specialists in mental healthcare, Utrecht, 3511 GE, Netherlands
4. Department of Health & Self-management, Inholland University of Applied Sciences, Amsterdam, 1081 HV, Netherlands