1. Department of Surgery, Sime Darby Medical Center, Subang Jaya, Malaysia.
2. Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
3. Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA.
4. Department of Surgery, Queens University Belfast, Belfast, United Kingdom.
5. Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia.