1. School of Pharmacy; Lanzhou University; Lanzhou P.R. China
2. Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences; Chinese Academy of Agricultural Sciences; Lanzhou P.R. China
3. Natural Products Research Laboratories, UNC Eshelman School of Pharmacy; University of North Carolina; Chapel Hill North Carolina
4. Chinese Medicine Research and Development Center; China Medical University and Hospital; Taichung Taiwan