Park S, Chun H J, Keum B, Seo Y S, Jeen Y T, Um S H, Kim C D, Ryu H S, Park S-S, Kim J
Department of Internal Medicine, Institute of Digestive Disease and Nutrition, Korea University College of Medicine, Seoul, Korea.
Endoscopy. 2010;42 Suppl 2:E1-2. doi: 10.1055/s-0029-1215255. Epub 2010 Jan 11.