Affiliations
Hospital Infantil de Mexico, Federico Gomez, Mexico, D.F., Mexico,
Department of Medicine, Emory University, Atlanta, Georgia, United States of America
Affiliations
Oswaldo Cruz Foundation, Rio de Janeiro, Brazil,
Weill Medical College of Cornell University, New York, New York, United States of America
Affiliations
Department of Microbiology, Immunology, and Tropical Medicine, The George Washington University, Washington, D.C., United States of America,
Sabin Vaccine Institute, Washington, D.C., United States of America