1. Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
2. Department of Surgery, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
3. Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia
4. Department of Plastic and Reconstructive Surgery, Sungai Buloh Hospital, Selangor, Malaysia