1. School of Chinese Medicine, North China University of Science and Technology, Tangshan, Hebei 063210, China
2. Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050051, China
3. Hebei Key Laboratory of Turbidity, Hebei Academy of Chinese Medicine Sciences, Shijiazhuang, Hebei 050011, China
4. School of Chinese Medicine, Hebei University, Baoding, Hebei 071051, China