Ji Eun Kim, Jung Yeol Han, Dong Chul Oh, Yon Ju Kim, Young Chul Chung, Sang Hee Jung, June Seek Choi, So Yeon Park, Hyun Kyong Ahn, Min Jeong Oh, Hyun Mee Ryu, Moon Young Kim, Kyu Hong Choi, Yeoung Ho Lee, Jae Hyug Yang
Korean J Obstet Gynecol. 2001;44(11):2025-2030. Published online November 1, 2001