- Address correspondence and reprint requests to Jie Jiang, MD, PhD, Department of Obstetrics and Gynecology, Qi Lu Hospital, Shandong University, 107 Wenhuaxi Rd, Jinan, 250012. E-mail: .
- Received May 22, 2013
- Accepted August 20, 2013
- First published November 1, 2013.
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