1 Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital and National Cancer Centre Singapore, Singapore, Singapore.
2 Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital and National Cancer Centre Singapore, Singapore, Singapore. bsgkp@hotmail.com.
3 Academic Clinical Programme of Surgery, Duke-National University of Singapore Medical School, Singapore, Singapore. bsgkp@hotmail.com.