- Zhiyong Zong, Department of Infectious Diseases, West China Hospital, Sichuan University, Chegdu 610041, China;
- Received July 21, 2006
- Revised March 12, 2007
- Accepted March 20, 2007
- First published March 3, 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.