Hyun Jin Roh, Sung Kyun Park, Jong Yun Hwang, Hyun Jin Cho, Song Hoon Lee, Hyang Ah Lee, Jung Won Choi, Sung Hoon Kim, Hee Dong Chae, Chung Hoon Kim, Gyu Rae Kim, Byung Moon Kang
Korean J Obstet Gynecol. 2004;47(9):1828-1832. Published online September 1, 2004