1. Department of Otolaryngology/Head and Neck Surgery, Prince of Wales Hospital, Randwick, Australia.
2. Faculty of Medicine, University of Sydney, Camperdown, Australia.
3. Department of Plastic and Reconstructive Surgery, Chris O'Brien Lifehouse, Camperdown, Australia.
4. Department of Plastic and Reconstructive Surgery, Concord Repatriation General Hospital, Concord, Australia.