About the Authors
Department of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
Division of Infectious Diseases and International Health, University of Virginia Health System, Charlottesville, Virginia, United States of America
Division of Intestinal and Genital Protozoal Diseases, Department of Medical Parasitology and Mycology, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, Tehran, Iran
International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
Department of Medicine, University of Chicago, Chicago, Illinois, United States of America
Department of Pathology and Laboratory Medicine, Section of Microbiology, University of Parma, Parma, Italy
Department of Pediatrics, Division of Infectious Diseases, University of Colorado Health Sciences Center and The Children's Hospital, Aurora, Colorado, United States of America
W. A. Petri, Jr. received research support from TechLab, Inc. and royalties from a patent license agreement with TechLab for a diagnostic test for amebiasis. These royalties accrue to the American Society of Tropical Medicine and Hygiene without benefit to W. A. Petri, Jr.
Conceived and designed the experiments: CC. Performed the experiments: IA SS JA CG. Analyzed the data: IA SS CG AC RH WP CC. Contributed reagents/materials/analysis tools: SR AC SP RH. Wrote the paper: IA WP CC. Coordinated collection of Bangladesh samples: RH. Coordinated collection of Italy samples: AC. Coordinated collection of USA samples: SP.