1. Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
2. Department of Surgery, Division of Plastic, Reconstructive and Aesthetic Surgery, National University Health Systems, Singapore
3. Department of Surgery, Yong Loo Lin School of Medicine, National University Health Systems, Singapore
4. Department of Surgery, Division of Plastic, Reconstructive and Aesthetic Surgery, Ng Teng Fong General Hospital, Singapore
5. Department of Ophthalmology, Division of Orbit and Oculofacial Surgery, National University Hospital, Singapore