1. Department of Pathology, Clinical Analysis and Toxicology, Health Sciences Center, Londrina State University, 86038-440 Londrina, Paraná, Brazil.
2. Department of Immunology, Instituto Adolfo Lutz, 01246-902 São Paulo, Brazil.
3. Integrated Center of Infectious Diseases of Londrina, Londrina, Paraná, Brazil; Division of Infectious Diseases, Department of Clinical Medicine, Health Sciences Center, Londrina State University, 86038-440 Londrina, Paraná, Brazil.
4. Integrated Center of Infectious Diseases of Londrina, 86010-140 Londrina, Paraná, Brazil.
5. Biostatistics, Exact Sciences Center, Londrina State University, 86055-900 Londrina, Paraná, Brazil.
6. School of Medicine, Health Sciences Center, Londrina State University, 86055-900 Londrina, Paraná, Brazil.