1. Unit Suicide Research & Mental Health Promotion, Department of Social and Preventive Medicine, Center for Public Health, Medical University of Vienna, Vienna, Austria
2. Wiener Werkstaette for Suicide Research, Vienna, Austria
3. Division of Child and Adolescent Psychiatry, College of Physicians & Surgeons, Columbia University, New York, USA
4. Department of Epidemiology, School of Public Health, New York, USA
5. New York State Psychiatric Institute, New York, NY, USA
6. Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
7. Department of Psychiatry, University of Toronto, Toronto, ON, Canada
8. Vibrant Emotional Health, National Suicide Prevention Lifeline, New York, NY, USA