1. Tropical Medicine Post Graduate Program, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
2. Interdisciplinary HTLV Research Group (GIPH), Belo Horizonte, Minas Gerais, Brazil.
3. Minas Gerais State Center of Hematology and Blood Transfusion (Fundação Hemominas), Belo Horizonte, Minas Gerais, Brazil.