- Address correspondence and reprint requests to Mingrong Qie, MD, Department of Gynecology and Obstetrics, West China Second University Hospital, No. 20 Block 3, Renminnan Road, 610041, Chengdu, Sichuan Province, China. E-mail: .
- Received June 2, 2013
- Accepted June 4, 2013
- First published September 1, 2013.
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