1. College of Acupuncture and Massage, Shaanxi University of Chinese Medicine, Xixian New Area, Shaanxi Province 712046, P. R. China
2. Shaanxi Key Laboratory of Acupuncture & Medicine, Xixian New Area, Shaanxi Province 712046, P. R. China
3. School of Pharmacy, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province Northwest University, 229 Taibai Road, Xi’an 710069, P. R. China