- Correspondence to Yuhua Qin, Department of Pharmacy, People's Hospital of Henan Province, Weiwu Road, Zhengzhou 450003, China;
- Received December 17, 2014
- Revised February 3, 2015
- Accepted March 16, 2015
- First published April 8, 2015.
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.