1. Laboratory of Human Pathology, Department of Pathology, Clinical Analysis and Toxicology, Health Sciences Center, University Hospital of Londrina, State University of Londrina, 86038-350 Londrina, PR, Brazil
2. Laboratory of Study and Application of DNA Polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, State University of Londrina, 86057-970 Londrina, PR, Brazil
3. Laboratory of Molecular Genetics and Immunology, Department of Pathological Sciences, Biological Sciences Center, State University of Londrina, 86057-970 Londrina, PR, Brazil