Affiliation: | 1.Institution of Epidemiology and Statistics, School of Public Health, Lanzhou University, 730000, Lanzhou, Gansu, P.R. China ;2.Workers’ Hospital of Jinchuan Corporation, Jinchuan Group CO., LTD, 737100, Jinchuan, Gansu, P.R. China ;3.School of Basic Medical Science, Lanzhou University, 730000, Lanzhou, Gansu, P.R. China ;4.School of Public Health and Emergency Management, Southern University of Science and Technology, 518055, Shenzhen, Guangdong, P.R. China ; |