[1] Univ Lausanne, Inst Hlth Econ & Management, CH-1015 Lausanne, Switzerland
[2] Erasmus Univ, Inst Hlth Policy & Management, NL-3000 DR Rotterdam, Netherlands
[3] Inst Trop Med, B-2000 Antwerp, Belgium
[4] Minist Hlth, Natl Inst Publ Hlth, Kumpuchea Krom, Phnom Penh, Cambodia
[5] URC, Nicaragua, Cambodia
[6] Ctr Adv Studies, Phnom Penh, Cambodia
[7] Univ Macedonia, Thessaloniki 54006, Greece
[8] Erasmus Univ, Erasmus Sch Econ, NL-3000 DR Rotterdam, Netherlands
[9] Tinbergen Inst, Amsterdam, Netherlands