1. Unit of Medical Toxicology, Headache Centre and Drug Abuse; Department of Biomedical, Metabolic and Neural SciencesUniversity of Modena and Reggio Emilia Via del Pozzo, 71 41124 Modena Italy
2. Department of Life SciencesUniversity of Modena and Reggio Emilia via G. Campi, 103 41125 Modena Italy
3. School of Medical ToxicologyUniversity of Modena and Reggio Emilia Via del Pozzo, 71 41124 Modena Italy
4. Forensic Toxicology Laboratory; Department of Biomedical, Metabolic and Neural SciencesUniversity of Modena and Reggio Emilia Via del Pozzo, 71 41124 Modena Italy