MD, PhD, DMedRes, FRANZCP, FRCPsych, FAFPHM, FFPH, FAChAM, Member, CAPIPRA, Canberra, ACT; Professor of Psychiatry, School of Medicine, The University of Queensland, Princess Alexandra Hospital, Brisbane, Qld; Professor of Psychiatry, Metro South Addiction and Mental Health Service, Brisbane, Qld; Professor, Departments of Psychiatry, Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia