Sun-Young Kang, Young-Joo Lee, Kyung Hee Park, So-Eun Jun, Seung-Chul Kim, Jong-Kil Joo, In-Suk Kim, Eun-Yup Lee

Obstet Gynecol Sci.2014;57(4):325-329.   Published online 2014 July 15     DOI: http://dx.doi.org/10.5468/ogs.2014.57.4.325