1. Department of PsychiatryAmsterdam UMC Location AMC Amsterdam The Netherlands
2. Department of PsychiatryUniversity Medical Center Groningen Groningen The Netherlands
3. GGZ‐Drenthe Assen The Netherlands
4. Icelandic Heart Association Reykjavik Iceland
5. Netherlands Twin Register, Department of Biological PsychologyVrije Universiteit Amsterdam The Netherlands
6. Alzheimer Center Amsterdam, Department of Neurology, Amsterdam NeuroscienceVrije Universiteit Amsterdam, Amsterdam UMC Amsterdam The Netherlands