Young Min Choi, Eun Joo Kim, Mi Ran Lee, Young Soo Son, Jin Choe, Doyeong Hwang, Jong Kwan Jun, Byung Chul Jee, Seung Yup Ku, Chang Suk Suh, Seok Hyun Kim, Jung Gu Kim, Shin Yong Moon
Korean J Obstet Gynecol. 2004;47(10):1975-1981. Published online October 1, 2004