1. Department of Psychiatry, Faculty of Medicine; University of British Columbia; Vancouver BC Canada
2. Institute of Mental Health, Centre of Health Evaluation and Outcome Sciences (CHEOS); University of British Columbia; Vancouver BC Canada
3. Department of Psychiatry, Faculty of Medicine; Tehran University of Medical Sciences; Tehran Iran
4. Roozbeh substance use treatment clinic; Tehran Iran
5. Psychiatric University Hospital; Basel Switzerland
6. Department of Neurology, Faculty of Medicine; University of British Columbia; Vancouver BC Canada