Kim Yong Sung, Ra Ji Eun, Sohn Young Woo
Department of Gastroenterology, Wonkwang Digestive Disease Research Institute, Wonkwang University Sanbon Hospital, Gunpo, South Korea.
Gastroenterology. 2009 Dec;137(6):e3-4. doi: 10.1053/j.gastro.2009.03.052. Epub 2009 Oct 30.