Cheun Sic Kang, So Yean Park, Ji Young Lee, Jee Young Oh, Won Deuk Ju, Sun Kwon Kim, Jong Yun Hwang, Mi Kyung Kim, Jae Yoon Shim, Gi Young Ko, Hye Sung Won, Dae Shik Suh, Pil Ryang Lee, Ahm Kim
Korean J Obstet Gynecol. 2004;47(1):51-59. Published online January 1, 2004