1. School of Nursing Ningxia Medical University Yinchuan China
2. Pain Department General Hospital of Ningxia Medical University Yinchuan China
3. TCM clinic of Puji Pharmacy Yinchuan China
4. Anorectal Department Yinchuan Hospital of Traditional Chinese Medicine affiliated to Ningxia Medical University Yinchuan China
5. School of Public Health and Management Ningxia Medical University Yinchuan China
6. School of Basic Medical Sciences Ningxia Medical University Yinchuan China
7. Department of Pharmacology Pharmaceutical Institute of Ningxia Medical University Yinchuan China