[1] Natl Univ Singapore, Saw Swee Hock Sch Publ Hlth, Singapore, Singapore
[2] Minist Natl Guard Hlth Affairs, Riyadh, Saudi Arabia
[3] King Saud bin Abdulaziz Univ Hlth Sci, Riyadh, Saudi Arabia
[4] Last Mile Hlth, Boston, MA USA
[5] Taipei Vet Gen Hosp, Dept Med Affairs & Planning, Taipei, Taiwan
[6] Natl Yang Ming Univ, Inst Hosp & Hlth Care Adm, Taipei, Taiwan
[7] Univ Hong Kong, Hong Kong, Peoples R China
[8] The BMJ, London, England
[9] Agcy Sci Technol & Res, Bioinformat Inst, Singapore, Singapore