Yoo In Kyung, Chun Hoon Jai, Keum Bora
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Institute of Digestive Disease and Nutrition Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
Clin Gastroenterol Hepatol. 2015 Sep;13(9):e141-2. doi: 10.1016/j.cgh.2015.05.010. Epub 2015 May 12.