1. Department of Consultation Psychiatry and Psychosomatics, University Hospital of Zürich, Zürich, Switzerland
2. Department of Clinical Psychology, Leiden University, Leiden, Netherlands
3. Clinical Psychology and Psychotherapy Department, University of Bern, Bern, Switzerland
4. Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada
5. Department of Psychiatry, Institute of Psychotherapy, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
6. Department of Psychiatry, University of Toronto, Toronto, ON, Canada