Kyung-Hee Lee, You-Jin Lim, Jong-Shim Lee, Mi-Sung Kim, Jeong-Hyeon Jo, Kyu-Rae Kim, Jeong-Yeol Park, Jong-Hyeok Kim

Korean J Obstet Gynecol.2011;54(11):701-706.   Published online 2011 November 23     DOI: http://dx.doi.org/10.5468/KJOG.2011.54.11.701