1. State University of Campinas (UNICAMP); Medical School, Department of Internal Medicine, Infectious Diseases Division; Rua Tessália Vieira de Camargo, 126 Cidade Universitária "Zeferino Vaz" Campinas São Paulo Brazil 13083-887
2. Federal University of Goias; Department of Public Health, Institute of Tropical Pathology and Public Health; Rua Amorinopolis QdR2 Lt13 Residencial Goias Alphaville Flamboyant Goiania Goias Brazil 74884-540
3. Botucatu Medical School, UNESP - Univ Estadual Paulista; Department of Nursing; Distrito de Rubião Júnior, s/n Botucatu São Paulo Brazil 18603-970
4. Botucatu Medical School, UNESP - Univ Estadual Paulista; Department of Tropical Diseases and Imaging Diagnosis; Av. Prof. Montenegro, s/n Distrito de Rubiao Jr Botucatu Sao Paulo Brazil 18618-970