1. Tuscan Regional Centre of Pharmacovigilance, Department of Pharmacology, University of Florence, Viale G. Pieraccini n°6 50139, Florence, Italy
2. Department of Preclinical and Clinical Pharmacology, Florence, Italy
3. Department of Statistical Science, University of Florence, Italy
4. Department of Emergency Medicine, ASL 4 Hospital, Prato, Italy
5. Centre of Natural Medicine, ASL 11 Hospital, Empoli, Italy