- Address correspondence and reprint requests to Seok Ju Seong, MD, PhD, Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul 135-081, Republic of Korea. E-mail: .
- Received October 26, 2015
- Accepted December 24, 2015
- First published May 1, 2016.
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