[1] Mental Hlth Ctr Friesland, Dept Old Age Psychiat, Leeuwarden, Netherlands
[2] Univ Groningen, Univ Med Ctr Groningen, Univ Ctr Psychiat, Groningen, Netherlands
[3] Radboud Univ Nijmegen Med Ctr, Dept Psychiat, Nijmegen, Netherlands
[4] Pro Persona, Nijmegen Mental Hlth Ctr, Nijmegen, Netherlands
[5] VU Univ Med Ctr GGZinGeest, Dept Psychiat EMGO Inst Hlth & Care Res, Amsterdam, Netherlands
[6] Univ Groningen, Univ Med Ctr Groningen, Dept Mol Neurobiol, Groningen, Netherlands
[7] Univ Groningen, Univ Med Ctr Groningen, Dept Biol Psychiat, Groningen, Netherlands
[8] Univ Groningen, Univ Med Ctr Groningen, Dept Internal Med, Univ Ctr Geriatr Med, Groningen, Netherlands
[9] GGNet, Dept Old Age Psychiat, Apeldoorn, Netherlands