Henry Tan Chor Lip1, Tan Jih Huei2, Ng Zi Qin3. 1. Department of General Surgery, Hospital Sultanah Aminah, Johor Bahru, Malaysia. relos1402@gmail.com. 2. Department of General Surgery, Hospital Sultanah Aminah, Johor Bahru, Malaysia. 3. Department of General Surgery, St John God Midland Hospital, Perth, Western Australia, Australia.