1. Department of Virology; São Paulo Institute of Tropical Medicine; University of São Paulo; São Paulo Brazil
2. Clinical Laboratory; Department of Pathology, LIM 03; Hospital das Clínicas (HC); School of Medicine; University of São Paulo; São Paulo Brazil
3. Pernambuco State Center of Hematology and Hemotherapy-HEMOPE; Recife Pernambuco Brazil
4. Hemorio; Rio de Janeiro Brazil
5. Minas Gerais State Center of Hematology and Hemotherapy-HEMOMINAS; Belo Horizonte Minas Gerais Brazil
6. Department of Infectious Disease/Institute of Tropical Medicine; University of São Paulo; São Paulo Brazil
7. Blood Systems Research Institute; San Francisco California