1. U.S. Naval Medical Research Unit No. 6, Lima, Peru.
2. Naval Medical Research Center, Silver Spring, Maryland, USA.
3. University of Maryland School of Medicine, Baltimore, Maryland, USA.
4. United States Department of Agriculture, Gainesville, Florida, USA.
5. Navy Entomology Center of Excellence, Jacksonville, Florida, USA.
6. Department of Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.