- Correspondence to Professor Seng Gee Lim, Department of Gastroenterology and Hepatology, National University Health System, Tower Block level 10, 1E Kent Ridge Road, Singapore 119228, Singapore;
- Received February 27, 2012
- Revised November 16, 2012
- Accepted November 22, 2012
- First published December 15, 2012.
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