Seok Hyun Kim, Sung Mi Choi, Hee Sun Kim, Buom Yong Ryu, Myung Geol Pang, Sun Kyung Oh, Seung Yup Ku, Byung Chul Jee, Chang Suk Suh, Young Min Choi, Jung Gu Kim, Shin Yong Moon, Jin Yong Lee
Korean J Obstet Gynecol. 2000;43(9):1624-1634. Published online January 1, 2001