Ja Yeon Kim, Ku Ri Hwang, Young Min Choi, Kyung Soo Lee, Seung Soo Han, Jae Man Bae, Seung Ho Lee, Byung Chul Jee, Seung Yup Ku, Chang Suk Suh, Seok Hyun Kim, Jung Gu Kim, Shin Yong Moon
Korean J Obstet Gynecol. 2005;48(6):1578-1584. Published online June 1, 2005