- Address correspondence and reprint requests to Yang Sun, MD, Department of Obstetrics and Gynecology, Fujian Provincial Hospital, No. 134 Dong St, Fuzhou, Fujian 350001, PR China. E-mail: .
- Received January 7, 2012
- Accepted May 7, 2012
- First published September 1, 2012.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.