1 Department of Respiratory and Sleep Medicine, Perth Children's Hospital, Nedlands, Western Australia, Australia.
2 Division of Pediatrics, Medical School, University of Western Australia, Crawley, Western Australia, Australia.
3 Perioperative Medicine Team, Telethon Kids Institute, Nedlands, Western Australia, Australia.
4 Division of Emergency Medicine, Anesthesia and Pain Medicine, Medical School, The University of Western Australia, Crawley, Western Australia, Australia.
5 Department of Anesthesia and Pain Management, Perth Children's Hospital, Nedlands, Western Australia, Australia.
6 Department of Otolaryngology/Head and Neck Surgery, Perth Children's Hospital, Nedlands, WA, Australia.
7 Centre for Sleep Science, School of Human Sciences, The University of Western Australia, Crawley, Western Australia, Australia.
8 Department of Pulmonary Physiology & Sleep Medicine, West Australian Sleep Disorders Research Institute, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.
9 Department of Mathematics and Statistics, The University of Western Australia, Crawley, Western Australia, Australia.
10 Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, Adelaide, South Australia, Australia.