Omid Ahmadi1, Jon A Mathy2,3. 1. Department of Otolaryngology and Head and Neck Surgery, Waikato Hospital, Hamilton, New Zealand. omid.ahmadi@waikatodhb.health.nz. 2. Auckland Regional Plastic, Reconstructive & Hand Surgery Unit, Middlemore Hospital, Auckland, New Zealand. 3. Department of Surgery, University of Auckland School of Medicine, Auckland, New Zealand.