[1] Univ New S Wales, Sch Publ Hlth & Community Med, Sydney, NSW 2052, Australia
[2] Australian Natl Univ, Natl Ctr Epidemiol & Publ Hlth, Canberra, ACT, Australia
[3] WHO, Dis Control Humanitarian Emergencies, Communicable Dis Cluster CDS NTD, CH-1211 Geneva, Switzerland
[4] De La Salle Univ, Social Dev Res Ctr, Manila, Philippines
[5] De La Salle Univ, Dept Behav Sci, Manila, Philippines
[6] WHO, Special Programme Res & Training Trop Dis, CH-1211 Geneva, Switzerland