1. Department of Otorhinolaryngology, Head & Neck Surgery, Tan Tock Seng Hospital, Singapore,
2. Yong Loo Lin School of Medicine, National University of Singapore,
3. Audiology Unit, Department of Otolaryngology, Tan Tock Seng Hospital, Singapore, and
4. Clinical Research Unit, Clinical Research & Innovation Office, Tan Tock Seng Hospital, Singapore