[1] Beijing Inst Microbiol & Epidemiol, State Key Lab Pathogen & Biosecur, Beijing 100071, Peoples R China
[2] Univ Antwerp, Fac Med, Vaccine & Infect Dis Inst, Ctr Hlth Econ Res & Modeling Infect Dis, Antwerp, Belgium
[3] Capital Med Univ, Dept Publ Hlth, Beijing, Peoples R China
[4] London Sch Hyg & Trop Med, Hlth Policy Unit, London WC1, England
[5] Univ Med Ctr Rotterdam, Erasmus MC, Dept Publ Hlth, Rotterdam, Netherlands
[6] Univ Sydney, Sch Publ Hlth, Sydney, NSW 2006, Australia