Eun Ju Hwang, Myong Cheol Lim, Eun Na Kim, Youngmee Kwon, Eun Kyung Hong, Dae Chul Jung, Sang Yoon Park

Korean J Obstet Gynecol.2010;53(11):1019-1023.   Published online 2010 November 30     DOI: http://dx.doi.org/10.5468/kjog.2010.53.11.1019