1. Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
2. Institute of Anatomy and Histology & Embryology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, P. R. China
3. Laboratory of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou 730000, P. R. China