1. Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Special Function Materials and Structure Design (MOF), and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
2. State Key Laboratory of Veterinary Etiological Biology and Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu Province 730046, P. R. China
3. Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing 400037, P. R. China