Joong Sik Shin, Jae Hyug Yang, Hyun Mee Ryu, Moon Young Kim, Jung Yeol Han, Hyun Kyong Ahn, Jin Hoon Chung, Ha Jung Lim, June Seek Choi, Joo Oh Kim, Min Hyoung Kim, Su Hyun Park, Hye Jin Cho, Kyu Hong Choi
Korean J Obstet Gynecol. 2004;47(12):2313-2318. Published online December 1, 2004