1. School of Medicine and Public Health; University of Newcastle; New South Wales Australia
2. Department of Clinical Toxicology and Pharmacology; Calvary Mater Newcastle; Newcastle New South Wales Australia
3. Drug and Alcohol Clinical Services; Hunter New England Local Health District; New South Wales Australia
4. Centre for Brain and Mental Health; University of Newcastle and Hunter Medical Research Institute; New South Wales Australia
5. Alcohol and Drug Services; St Vincents Hospital, Darlinghurst; New South Wales Australia
6. Drug and Alcohol Services, Central Coast Local Health District; New South Wales Australia