1. Department of Pharmacology of Chinese Materia Medica, School of Chinese Integrative Medicine Hebei Medical University Shijiazhuang 050017 P. R. China
2. Department of Pharmacy The Fourth Hospital of Hebei Medical University Shijiazhuang 050019 P. R. China
3. Department of Pharmacy The Third Hospital of Hebei Medical University Shijiazhuang 050051 P. R. China
4. School of Chinese Integrative Medicine Hebei Medical University Shijiazhuang 050031 P. R. China