- Correspondence to Professor Wen Yin, State Key Discipline and Department of Microbiology, Fourth Military Medical University, 169 West Changle Road, Xi'an, Shaanxi 710032, China; .
- Received February 21, 2013
- Revised September 22, 2013
- Accepted October 27, 2013
- First published November 15, 2013.
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.