1. Parnassia Psychiatric Institute; The Hague The Netherlands
2. AcCENT - Academic Center for ECT and Neuromodulation; University Psychiatric Center, KU Leuven (Catholic University of Leuven), Campus Kortenberg; Kortenberg Belgium
3. Department of Clinical Psychology; Leiden University; Leiden The Netherlands
4. VU University Medical Center and GGZ inGeest; Amsterdam The Netherlands