Hyun Jin Eum, Eun Young Choi, Ji Man Cha, Joo Yeon Chung, Eun Ju Park, Sung Hoon Kim, Dae Joon Cheon, Hee Dong Chae, Chung Hoon Kim, Byung Moon Kang, Kyun Park, Yoon Seok Chang
Korean J Obstet Gynecol. 2001;44(7):1285-1290. Published online July 1, 2001