1. Division of Parasitic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
2. Atlanta Research and Education Foundation, Decatur, Georgia
3. Department of International Health, Johns Hopkins University School of Public Health and Hygiene, Baltimore, Maryland
4. Asociación Benéfica Proyectos en Informática, Salud, Medicina y Agricultura (PRISMA), Lima, Peru
5. Department of Veterinary Science and Microbiology, University of Arizona, Tucson, Arizona
6. Universidad Peruana Cayetano Heredia, Lima, Peru