1. Department of Medical and Surgical Sciences, Institute of Respiratory Diseases, Policlinico Universitario “Riuniti” di Foggia, University of Foggia, 71122 Foggia, Italy
2. Department of Medical and Surgical Sciences, Institute of Geriatric, Policlinico Universitario “Riuniti” di Foggia, University of Foggia, 71122 Foggia, Italy
3. Department of Basic Medical Science, Neuroscience and Sensory Organs, Institute of Sports Medicine, University “Aldo Moro” of Bari, 70122 Bari, Italy
4. Department of Medical and Surgical Sciences, Institute of Internal Medicine, Liver Unit, Policlinico Universitario “Riuniti” di Foggia, University of Foggia, 71122 Foggia, Italy
5. Department of Internal of Medicine, IRCCS Fondazione Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy
6. Unità Sanitaria Locale (ASL) di Potenza, 85100 Potenza, Italy
7. Unit of Interventional and Diagnostic Ultrasound of Internal Medicine, IRCCS Fondazione Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy