[1] Univ New South Wales, Dept Med, Sch Med, Sydney, NSW, Australia
[2] Macquarie Univ, Australian Sch Adv Med, Sydney, NSW, Australia
[3] Oxford Univ Hosp Trust, Dept Plast Surg, Oxford, England
[4] Royal Prince Alfred Hosp, Sydney Head & Neck Canc Inst, Camperdown, NSW, Australia
[5] Liverpool Hosp, Dept Head & Neck Surg, Sydney, NSW, Australia