1. National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia2Centre for Research Excellence in Sun and Health, Brisbane, Australia
2. National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia3Telethon Institute for Child Health Research, University of Western Australia, Perth
3. Department of Public Health, University of Otago, Wellington, New Zealand
4. QIMR Berghofer Medical Research Institute, Brisbane, Australia