1. School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
2. Department of Pharmacy, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
3. School of Basic Medicine, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China