1 Department of Experimental and Clinical Medicine, Univeristy of Florence, Italy.
2 University Hospital of Geneva, Geneva, Switzerland.
3 University of Modena and Reggio Emilia, Modena, Italy.
4 Unit of Internal Medicine, Department of Internal Medicine, SS Annunziata Hospital, Cento, Ferrara, Italy.
5 "G. Fontana" Centre for the Study and Multidisciplinary Treatment of Alcohol Addiction, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
6 University of Valencia, Hospital La Fe, Valencia, Spain.