Su Seon Kim, Young Jin Seo, Mi Jung Kim, Hye Mi Eom, Eun Jeong Jeong, Jung Mi Byun, Young Nam Kim, Kyoung Bok Lee, Moon Su Sung, Ki Tae Kim, Dae Hoon Jeong

Korean J Obstet Gynecol.2012;55(12):1015-1019.   Published online 2012 December 18     DOI: http://dx.doi.org/10.5468/KJOG.2012.55.12.1015