- Address correspondence and reprint requests to: Xia Zhao, MD, Department of Gynecology and Obstetrics, Second West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, People' s Republic of China. Email:
- First published July 1, 2008.
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.