1 Queensland Cerebral Palsy and Rehabilitation Research Centre, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia.
2 John Hunter Children's Hospital, Newcastle, New South Wales, Australia.
3 Discipline of Child and Adolescent Health, Faculty of Medicine and Health, Cerebral Palsy Alliance Research Institute, The University of Sydney, Sydney, New South Wales, Australia.
4 School of Public Health and Preventative Medicine, Monash University, Melbourne, Victoria, Australia.
5 Perth Children's Hospital, Perth, Western Australia, Australia.
6 Physiotherapy Department, University of Melbourne, Melbourne, Victoria, Australia.
7 Occupational Therapy Department, Royal Children's Hospital, Melbourne, Victoria, Australia.