Affiliation: | aDepartment of Internal Medicine and Division of Infectology, Brazilian Federal University of Rio Grande do Sul State, rua Ramiro Barcelos 2350, Porto Alegre, RS, 90035-903, Brazil.;bFaculty of Nursing, São Paulo University, Ribeirão Preto, Brazil.;cInstitute of Public Health, Brazilian Federal University of Bahia State, Salvador, Brazil. |