- Address correspondence and reprint requests to Joo-Hyun Nam, 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, South Korea. E-mail: .
- Received September 15, 2013
- Accepted October 24, 2013
- First published February 1, 2014.
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