[1] Post-Graduate Medical Sciences Program,
[2] Universidade Federal do Rio Grande do Sul,undefined
[3] Biomedicine School,undefined
[4] IPA,undefined
[5] School of Biology,undefined
[6] Universidade Federal do Rio Grande do Sul,undefined
[7] Clinical Pathology Service,undefined
[8] Hospital de Clínicas de Porto Alegre,undefined
[9] Infectious Diseases Service,undefined
[10] Hospital de Clínicas de Porto Alegre,undefined