[1] Monash Univ, Cent Clin Sch, Fac Med Nursing & Hlth Sci, Melbourne, Vic, Australia
[2] Fudan Univ, Dept Gen Practice, Zhongshan Hosp, Shanghai, Peoples R China
[3] World Hlth Org, Reg Off Western Pacific, Div Communicable Dis, Manila, Philippines
[4] Univ Toronto, Dept Family & Community Med, Toronto, ON, Canada
[5] Univ Cambridge, Cambridge Ctr Hlth Serv Res, Cambridge, England
[6] Univ Hong Kong, Li Ka Shing Fac Med, Dept Family Med & Primary Care, Hong Kong, Hong Kong, Peoples R China