1. Department of Otolaryngology - Head and Neck Surgery; National University Hospital; Singapore
2. Department of Pathology; National University Hospital; Singapore
3. Division of Endocrinology, University Medicine Cluster; National University Hospital; Singapore
4. Department of Medicine, Yong Loo Lin School of Medicine; National University of Singapore; Singapore
5. Department of Pathology, Yong Loo Lin School of Medicine; National University of Singapore; Singapore
6. Department of Laboratory Medicine; National University Hospital; Singapore
7. Division of General Surgery, University Surgical Cluster; National University Hospital; Singapore
8. Department of Otolaryngology - Head and Neck Surgery, Yong Loo Lin School of Medicine; National University of Singapore; Singapore