1. School of Medicine, Anhui University of Science and Technology, Chongren Building, No 168, Taifeng St, Huainan, 232001, P. R. China
2. Anhui Province Engineering Laboratory of Occupational Health and Safety, Anhui University of Science and Technology, Huainan, 232001, P. R. China
3. Department of Clinical Laboratory, Anhui Zhongke Gengjiu Hospital, Hefei, 230041, P. R. China
4. Key Laboratory of Industrial Dust Prevention and Control & Occupational Safety and Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, 232001, P. R. China