1. Departament of Clinical and Toxicological AnalysisFaculty of PharmacyFederal University of Minas Gerais Belo Horizonte Brazil
2. Departament of Surgery, Faculty of MedicineFederal University of Minas Gerais Belo Horizonte Brazil
3. Departament of Pediatrics, Faculty of MedicineFederal University of Minas Gerais Belo Horizonte Brazil