1. Atma Jaya Catholic University of Indonesia, School of Medicine, Jakarta, Indonesia
2. Nijmegen Institute for Scientist-Practitioners in Addiction (NISPA), Radboud University, Nijmegen, The Netherlands
3. Division of Addiction, Department of Psychiatry, University of Calgary, Calgary, Alberta, Canada
4. Department of Psychiatry, Radboud University Medical Centre, Nijmegen, The Netherlands
5. Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
6. Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
7. British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, British Columbia, Canada
8. Department of Medicine, University of British Columbia, St. Paul's Hospital, Vancouver, British Columbia, Canada
9. School of Medicine, University College Dublin, Belfield, Dublin, Ireland