1. College of Basic Medicine, Shaanxi University of Chinese Medicine, Xianyang, PR China
2. Key Laboratory of Gastrointestinal Diseases and Prescriptions in Shaanxi Province, Shaanxi University of Chinese Medicine, Xianyang, PR China
3. Department of General Surgery, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, PR China
4. State Forestry and Grassland Administration Engineering Research Center of Fu tea, Xianyang, PR China
5. Department of Infectious Disease, The Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, PR China