Suk Hyun Kim, Soon Sub Shim, Byung Chul Jee, Sung Mi Choi, Hee Sun Kim, Bum Yong Ryu, Sun Gyung Oh, Chang Suk Seo, Young Min Choi, Gwang Bum Bae, Jung Goo Kim, Sin Yong Moon, Jin Yong Lee
Korean J Obstet Gynecol. 2001;44(1):48-56. Published online January 1, 2001