1. Forensic Toxicology and Chemistry Laboratory; Criminalistic Institute of São Paulo; São Paulo SP 05507-060 Brazil
2. Poison Control Center; State University of Campinas; Campinas SP 13083-887 Brazil
3. Department of Biochemistry and Immunology; Institute of Biological Sciences; Federal University of Minas Gerais; Belo Horizonte MG 29075-910 Brazil