1. Department of Basic Health Sciences; Universidade Estadual de Maringá, Maringá; Brazil
2. Histogene Laboratory of Histocompatibility and Genetics, Maringá; Brazil
3. Academic Computer Science; Universidade Estadual de Maringá, Maringá; Brazil
4. Department of Statistics; Universidade Estadual de Maringá, Maringá; Brazil
5. Department of Medicine; Universidade Estadual de Maringá, Maringá; Brazil