Seok Hyun Kim, Seung Yup Ku, Byung Chul Jee, Eun Kyung Kim, Eun Kyung Chun, Hee Sun Kim, Sun Kyung Oh, Chang Suk Suh, Young Min Choi, Jung Gu Kim, Shin Yong Moon, Jin Yong Lee
Korean J Obstet Gynecol. 2001;44(11):2000-2009. Published online November 1, 2001