- Correspondence to Dr Rong-Qiang Zhang, Shaanxi University of Chinese Medicine, Xianyang, Shiji Road, Shaanxi 712046, China;
- Received April 4, 2017
- Revised May 24, 2017
- Accepted June 4, 2017
- First published July 8, 2017.
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.