1. Health Technology Assessment Committee, Health Directorate, University Hospital “G. Rodolico,” Catania, Italy
2. Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
3. Hepatology Unit, A.O.U. Policlinico-Vittorio Emanuele, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
4. Department of Drug Sciences, University of Catania, Catania, Italy
5. School of Medicine, University of Catania, Catania, Italy