1. Centre for Health Evaluation and Outcome Sciences, Vancouver, British Columbia, Canada
2. British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
3. Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
4. Department of Family Medicine and Emergency Medicine, Université de Montréal, Montreal, Quebec, Canada
5. Department of Epidemiology, University of California, Los Angeles, CA
6. Department of Statistics, University of British Columbia, Vancouver, British Columbia, Canada
7. School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
8. Addiction Medicine Section, Department of Medicine, School of Medicine, Oregon Health and Science University, Portland, OR
9. Department of Statistics and Actuarial Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
10. Department of Anesthesiology, Pharmacology & Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
11. Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
12. Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada
13. Department of Economics, Simon Fraser University, Burnaby, British Columbia, Canada
14. Department of Public Health, Health Services Research, and Health Technology Assessment, UMIT-University for Health Sciences, Medical Informatics, and Technology, Hall in Tirol, Austria
15. Department of Health Policy and Management, Center for Health Decision Science, Harvard T. H. Chan School of Public Health, Boston, MA
16. Department of Radiology, Program on Cardiovascular Research, Institute for Technology Assessment, Massachusetts General Hospital, Harvard Medical School, Boston, MA.