Leung Natalie M W, Chan Hing Sang, Vlantis Alexander C, Tong Michael C F
Department of Otorhinolaryngology, Head and Neck Surgery, the Chinese University of Hong Kong, Hong Kong.
Otolaryngol Head Neck Surg. 2010 Aug;143(2):315-6. doi: 10.1016/j.otohns.2010.03.005.