1. Laboratory of Research in Applied Immunology, State University of Londrina, Londrina, Brazil
2. Department of Rheumatology, Pontifical Catholic University of Paraná (PUC/PR), Londrina, Brazil
3. Department of Rheumatology, State University of Londrina, Londrina, Brazil
4. Department of Pathology, Clinical Analysis and Toxicology, Laboratory of Research in Applied Immunology, State University of Londrina, Londrina, Brazil