1 Department of Colorectal Surgery, Singapore General Hospital, Singapore

2 Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore

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Funding/Support: None reported.

Financial Disclosure: None reported.

Correspondence: Isaac Seow-En, F.R.C.S., Department of Colorectal Surgery, Singapore General Hospital, Outram Rd, Singapore 169608, Singapore. E-mail: [email protected]