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, Jung Gu Kim, Byung Chul Jee, Soo Young Oh
Korean J Obstet Gynecol. 1999;42(3):457-463. Published online January 1, 2001