- Address correspondence and reprint requests to Keiichiro Nakamura, MD, PhD, Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-tyo, Kita-ku, Okayama 700-8558, Japan. E-mail: .
- Received June 22, 2017
- Accepted August 9, 2017
- First published January 1, 2018.
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