1. College of Pharmaceutical SciencesYunnan University of Traditional Chinese Medicine Kunming 650500 P. R. China
2. Feixian Agriculture Bureau Feixian 273400 P. R. China
3. Guangdong Key Laboratory for Genome Stability & Disease PreventionSchool of Pharmaceutical SciencesShenzhen University Health Science Center Shenzhen 518060 P. R. China