l version="1.0" encoding="UTF-8"?>Yamada’s Textbook of Gastroenterology, 6th Edition (2 Volume Set), Daniel K. Podolsky, Michael Camilleri, J. Gregory Fitz, Anthony N. Kalloo, Fergus Shanahan, Timothy C. Wang (Eds.). Wiley-Blackwell, New York, New York (2015), 3440