4 Health Economic Research Institute, Sun Yat-Sen University, 132 East Waihuan Road, Guangzhou University City, Guangzhou, 510006, China.
5 Health Economic Research Institute, Sun Yat-Sen University, 132 East Waihuan Road, Guangzhou University City, Guangzhou, 510006, China. xuanjw3@mail.sysu.edu.cn.
6 School of Public Health, Fudan University, Shanghai, 200032, China. yychen@shmu.edu.cn.
7 NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China. yychen@shmu.edu.cn.