1. Department of Pharmacology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
2. Department of Physics, Weifang Medical University, Weifang, Shandong 261053, P.R. China
3. Department of Gynecology, Zhenjiang Maternity and Child Health Hospital, Zhenjiang, Jiangsu 212001, P.R. China
4. Department of Pathology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
5. Department of Microbiology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
6. Department of Chemistry, Weifang Medical University, Weifang, Shandong 261053, P.R. China