1 Department of Psychiatry, Erasmus University Medical Centre, The Netherlands and Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium.
2 Department of Psychiatry, Radboudumc and Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands. Electronic address: eric.ruhe@radboudumc.nl.