Leite, M.; Siciliano, S.; Rocha, L. S. A.; Justa, T. R.; César, K. R.; Granato, C. F. H. Correlation Between Specific IgM Levels and Percentage IgG-Class Antibody Avidity to Toxoplasma Gondii . Rev. Inst. Med. Trop. São Paulo 2008, 50 (4), 237-242.