1. The Department of Psychiatry, University of Amsterdam (Denys, Graat, Mocking, de Koning, Vulink, Ooms); the Department of Psychiatry, Mount Sinai Hospital, New York (Figee); the Department of Neurosurgery, University of Amsterdam (van den Munckhof, Schuurman); and the Department of Neurology and Neurosurgery, University of Amsterdam Utrecht, Utrecht, the Netherlands (Mantione).