- Address correspondence and reprint requests to Tong Ren, MD, Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No. 1. Dongchen District, Beijing 100730, PR China. E-mail: firstname.lastname@example.org.
- Received October 29, 2011
- First published June 1, 2012.
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