1. Department of Biology, Federal University of Maranhão, São Luís, Brazil;
2. State University of Maranhão, Caxias, Brazil;
3. President Vargas State Hospital, São Luís, Brazil;
4. Department of Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil;
5. Postgraduate Program in Health Sciences, Federal University of Maranhão, São Luís, Brazil;
6. Postgraduate Program in Health and Environment, Federal University of Maranhão, São Luís, Brazil;
7. Department of Medicine, Federal University of Maranhão, São Luís, Brazil