Paul Haber trained as a gastroenterologist in Sydney before completing doctoral and postdoctoral studies addressing the biology of alcohol metabolism and toxicity. He was appointed to Drug Health Services at Royal Prince Alfred Hospital in Sydney in 1998 and is an active clinician and researcher. He is a Conjoint Professor in Medicine and Public Health at the University of Sydney.

Carolyn Day is an Associate Professor in the Discipline of Addiction Medicine at the University of Sydney. She is a public health researcher and academic with expertise in illicit drug use and related harms, particularly blood-borne viral infections

Michael Farrell is the Professor and Director of the National Drug and Alcohol Research Centre at the University of New South Wales, Sydney. He is a member of the WHO Expert Committee on Drug Dependence. His research covers aspects of public health, evidence-based practice, and translation of research into policy and practice.