- Address correspondence and reprint requests to Jeong-Yeol Park, MD, PhD, Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, #388-1 Poongnap-2 dong, Songpa-gu, Seoul 138-736, Korea. E-mail: .
- Received March 27, 2015
- Accepted February 4, 2016
- First published June 1, 2016.
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