1. Children's Hospital Westmead Clinical School, The University of Sydney, Westmead, New South Wales, Australia.
2. Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Westmead, New South Wales, Australia.
3. Westmead Applied Research Center, Faculty of Medicine and Health, The University of Sydney, Westmead, New South Wales, Australia.
4. Weight Management Services, The Children's Hospital at Westmead, Westmead, New South Wales, Australia.