1. Toxicological Assistance Center; Instituto Dr. José Frota; Fortaleza Ceará Brazil
2. Post-Graduation Program in Medical Sciences; Department of Internal Medicine; School of Medicine; Federal University of Ceará; Fortaleza Ceará Brazil
3. Post-Graduation Program in Collective Health; Health Sciences Center; School of Medicine; University of Fortaleza; Fortaleza Ceará Brazil
4. Department of Statistics; Sciences Center; Federal University of Ceará; Fortaleza Ceará Brazil