aFaculty of Medicine, The University of Queensland

bMetro South Addiction and Mental Health Service, Brisbane

cQueensland Centre for Mental Health Research, Wacol, Queensland

dFaculty of Medicine and Health, The University of Sydney, Sydney, New South Wales

eAustralian Research Council (ARC) Centre of Excellence for Children and Families over the Life Course, Australia

Correspondence to Urska Arnautovska, Princess Alexandra Hospital, Building 33 (Ground floor), 199 Ipswich Road, Woolloongabba, QLD 4102, Australia. E-mail: [email protected]