Shin Yong Moon, Young Min Choi, Seok Hyun Kim, Sun Kyung Oh, Chang Suk Suh, Jin Yong Lee, Byeong Jun Jung, Hee Sun Kim, Buom Yong Ryu, Myung Geol Pang, Jung Gu Kim, Byung Chul Jee, Sung Mi Choi
Korean J Obstet Gynecol. 1999;42(2):264-272. Published online January 1, 2001