[1] Nagasaki Univ, Trop Med & Global Hlth, Nagasaki, Japan
[2] London Sch Hyg & Trop Med, Inst Trop Med, London, England
[3] Univ Tokyo, Dept Global Hlth Policy, Bunkyo Ku, Tokyo, Japan
[4] Hitotsubashi Univ, Hitotsubashi Inst Adv Study, Kunitachi, Tokyo, Japan
[5] St Lukes Int Univ, Grad Sch Publ Hlth, Chuo Ku, Tokyo, Japan
[6] Keio Univ, Dept Hlth Policy & Management, Tokyo, Japan