Moon Whan Im, Kyung Eun Song, Hyun Mi Kim, Jong Pil Kim, Jeong Rye Lee, Jee Hyun Park, Sung Ook Hwang, In Hwa Noh, Seung Kwon Koh, Byoung Ick Lee, Woo Young Lee, Wonsick Choe
Korean J Obstet Gynecol. 2001;44(12):2184-2189. Published online December 1, 2001