1. National Drug and Alcohol Research Centre; University of New South Wales; Sydney Australia
2. Royal Prince Alfred Hospital; University of Sydney; Sydney Australia
3. Drug and Alcohol Services; South Eastern Sydney Local Health District; Sydney Australia
4. Drug and Alcohol Services; Hunter New England Local Health District; Newcastle Australia
5. School of Medicine and Public Health; Faculty of Health; University of Newcastle; Newcastle Australia
6. School of Population and Global Health; University of Melbourne; Melbourne Australia
7. Murdoch Children's Research Institute; Royal Children's Hospital; Melbourne Australia
8. Department of Global Health; School of Public Health; University of Washington; Seattle USA
9. School of Public Health and Community Medicine; University of New South Wales; Sydney Australia