Byoung Cheol Choi, Seung Ug Lim, Gi Nam Eom, Gyung Chel Song, Jong Min Lee, Gwang Jun Kim, Seok Yeung Kim, Soon Pyo Lee, Ji Sung Lee, Beung Cheol Hwang, Chan Yong Park, Eui Don Lee, Yu Dok Choi
Korean J Obstet Gynecol. 2001;44(4):769-774. Published online April 1, 2001