1. Teaching Experiment Training Center, Ningxia Medical University, Yinchuan City, Ningxia, People’s Republic of China
2. Department of Integrated Traditional Chinese and Western Medicine, Zhangye People's Hospital Affiliated to Hexi University, Zhangye City, Gansu, People’s Republic of China
3. College of Basic Medicine, Ningxia Medical University, Yinchuan City, Ningxia, People’s Republic of China