Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 45 1 2016 02 13 107 108 Hua ZHANG Dept. of Medical Insurance, School of Public Health, Southeast University, Nanjing, Jiangsu, China Jianqian CHAO Dept. of Medical Insurance, School of Public Health, Southeast University, Nanjing, Jiangsu, China Shiyuan WANG Dept. of Epidemiology and Biostatistics, School of Public Health, Southeast University, Nanjing, Jiangsu, China Pei LIU Dept. of Epidemiology and Biostatistics, School of Public Health, Southeast University, Nanjing, Jiangsu, China 2016 01 27 2016 01 27 No Abstract. https://ijph.tums.ac.ir/index.php/ijph/article/view/5854 https://ijph.tums.ac.ir/index.php/ijph/article/download/5854/5288