Hee Joong Lee, Sung Ha Lee, Hyun Jung Kim, Jae Hoon Kim, Young Ok Lew, Jin Ok Lee, Young Wan Kim, Woong Shick Ahn, Chong Kook Kim, Jun Mo Lee, Dae Hoon Kim, Sung Eun Namkoong, Kim Dou Kang
Korean J Obstet Gynecol. 2004;47(2):258-263. Published online February 1, 2004