1. Drug Policy Modelling Program, SPRC UNSW Sydney Sydney NSW Australia
2. Centre for Big Data Research in Health, Faculty of Medicine UNSW Sydney Sydney NSW Australia
3. National Drug and Alcohol Research Centre UNSW Sydney Sydney NSW Australia
4. Département de médecine famille et de médicine d'urgence Université de Montréal, Centre de recherche du Centre Hospitalier de l'Université de Montréal Montreal Quebec Canada
5. Northern Sydney Local Health District, Drug and Alcohol Services University of Sydney NSW Australia