Sang Eun Lee, Yong Sang Song, Sokbom Kang, Youn Kyung Chung, Moon Hong Kim, Woong Ju, Seung Sook Lee, In Ae Park, Yong Beom Kim, Jae Weon Kim, Noh Hyun Park, Soon Beom Kang, Hyo Pyo Lee
Korean J Obstet Gynecol. 2004;47(8):1500-1504. Published online August 1, 2004