[1] Murdoch Childrens Res Inst, Populat Hlth, Parkville, Vic, Australia
[2] Univ Melbourne, Dept Paediat, Parkville, Vic, Australia
[3] Deakin Univ, Sch Med, Geelong, Vic, Australia
[4] Barwon Hlth, Childrens Serv, Geelong, Vic, Australia
[5] St John God Hosp, Geelong, Vic, Australia
[6] Murdoch Childrens Res Inst, Parkville, Vic, Australia
[7] Univ Melbourne, Sch Populat & Global Hlth, Parkville, Vic, Australia
[8] Australian Natl Univ, Res Sch Populat Hlth, Natl Ctr Epidemiol & Populat Hlth, Canberra, ACT, Australia
[9] Barwon Hlth, Child Hlth Res Unit, Geelong, Vic, Australia
[10] Florey Inst Neurosci & Mental Hlth, Neuroepidemiol Res Grp, Parkville, Vic, Australia