- Address correspondence and reprint requests to Mi Kyoung Kim, MD, Department of Obstetrics & Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul 135-081, Republic of Korea. E-mail: .
- Received August 2, 2016
- Accepted December 12, 2016
- First published May 1, 2017.
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