1. School of Public Health, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, Australia
2. Child Development Unit, The Children’s Hospital at Westmead, The Sydney Children’s Hospitals Network, Westmead, NSW, Australia
3. Department of Anaesthesia, The Children’s Hospital at Westmead, The Sydney Children’s Hospitals Network, Westmead, NSW, Australia
4. School of Women’s and Children’s Health, University of New South Wales, Sydney, NSW, Australia
5. Specialist Intellectual Disability Health Team, Department of Community Paediatrics, South Western Sydney Local Health District, Warwick Farm, NSW, Australia
6. Executive Unit, The Sydney Children’s Hospitals Network, Westmead, Australia
7. Division of Child and Adolescent Health, The University of Sydney, Camperdown, NSW, Australia