1. Department of Otorhinolaryngology–Head and Neck Surgery United Christian Hospital and Tseung Kwan O Hospital Hong Kong
2. Department of Medicine and Geriatrics United Christian Hospital Hong Kong
3. Department of Pathology United Christian Hospital Hong Kong
4. Department of Pathology Tseung Kwan O Hospital Hong Kong
5. Department of Medicine Tseung Kwan O Hospital Hong Kong
6. Department of Otorhinolaryngology–Head and Neck Surgery The Chinese University of Hong Kong Hong Kong