1. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia
2. University of Alaska Anchorage, Anchorage, Alaska
3. Discipline of Addiction Medicine, Central Clinical School, University of Sydney, New South Wales, Australia
4. Department of the Attorney-General and Justice, Northern Territory Correctional Services, Darwin, Australia
5. Program of International Research and Training, National Drug and Alcohol Research Centre, University of New South Wales, Sydney, Australia