1. Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
2. Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
3. Techo Siem Pang High School, Provincial Department of Education, Youth and Sport, Siem Pang, Stung Treng, Cambodia
4. Siem Pang Health Centre, Provincial Health Department, Siem Pang, Stung Treng, Cambodia
5. District Governor Office, Siem Pang District Administration, Siem Pang, Stung Treng, Cambodia
6. Provincial Health Department, Stung Treng, Cambodia
7. CNM National Centre for Parasitology, Entomology and Malaria Control, Phnom Penh, Cambodia
8. School of Public Health, National Institute of Public Health, Phnom Penh, Cambodia