[1] Shanghai Hlth & Dev Res Ctr, Dept Hlth Policy Res, Shanghai, Peoples R China
[2] Karolinska Inst, Dept Learning Informat Management & Eth, Solna, Sweden
[3] China Pharmaceut Univ, Sch Int Pharmaceut Business, Nanjing, Jiangsu, Peoples R China
[4] Fudan Univ, Sch Publ Hlth, Shanghai, Peoples R China