Dong Yun Lee, Sang Shin Park, Hyun Il Cho, Dong Ock Lee, Chan Wook Park, Yoo Kyung Sohn, Kyu Lee Hwang, Soon Sup Shim, Hye Won Jeon, Joong Shin Park, Jong Kwan Jun, Kwang Bum Bae, Bo Hyun Yoon, Hee Chul Syn
Korean J Obstet Gynecol. 2004;47(11):2229-2235. Published online November 1, 2004