Moon Whan Im, Dae Hoon Im, Sang Hoon Han, Jeong Rye Lee, Jee Hyun Park, Sung Ook Hwang, In Hwa Noh, Eun Seop Song, Seung Kwon Koh, Byoung Ick Lee, Jong Hwa Kim, Woo Young Lee
Korean J Obstet Gynecol. 2001;44(3):513-518. Published online March 1, 2001