Young Min Choi, Jin Choe, Do Yeong Hwang, Sung Hyo Park, Jong Kwan Jun, Seung Yup Ku, Chang Suk Suh, Seok Hyun Kim, Jeong Koo Kim, Shin Yong Moon, Jin Yong Lee, Eun Joo Kim
Korean J Obstet Gynecol. 2000;43(5):771-776. Published online January 1, 2001