1 Department of Paediatrics Otolaryngology Head & Neck Surgery, Perth Children's Hospital, 15 Hospital Avenue, Nedlands, 6009, Western Australia, Australia.
2 Murdoch ENT, Wexford Medical Center, Suite 17-18, Level 1, 3 Barry Marshall Parade, Murdoch, 6150, Western Australia, Australia.
3 Department of Surgery, University of Western Australia, Stirling Highway, Nedlands, 6009, Western Australia, Australia.
4 Department of Medical Engineering and Physics, Royal Perth Hospital, Level 1, North Block, Wellington Street, Perth, 6000, Western Australia, Australia.