About the Authors
Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
Ratchaburi Hospital, Ministry of Public Health, Ratchaburi, Thailand
Department of Disease Control, Ministry of Public Health, Nonthaburi, Thailand
International Public Health Consultant, Denver, Colorado, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: CS KL PC VJ WC KP SS WD AS. Performed the experiments: CS KL PC VJ WC KP SS WD AS. Analyzed the data: CS KL. Contributed reagents/materials/analysis tools: KL AS. Wrote the paper: CS GWL AS.