. 2020 Feb 25;63(2):195–204. doi: 10.5468/ogs.2020.63.2.195
Copyright © 2020 Korean Society of Obstetrics and Gynecology
Articles published in Obstet Gynecol Sci are open-access, distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.