1. Department of Otorhinolaryngology—Head and Neck Surgery, Division of Facial Plastic Surgery, United Christian Hospital and Tseung Kwan O Hospital, Hong Kong SAR, China.
2. Department of Otorhinolaryngology, Head and Neck Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China.
3. Department of Otorhinolaryngology—Head and Neck Surgery, United Christian Hospital and Tseung Kwan O Hospital, Hong Kong SAR, China.