1. Division of Internal Medicine and Chronobiology Unit; Department of Medical Sciences; IRCCS Scientific Institute and Regional General Hospital “Casa Sollievo della Sofferenza”; San Giovanni Rotondo (FG) Italy
2. Division of Medicine; Institute for Liver and Digestive Health; University College London; London UK
3. EuroMEditerranean Institute of Science and Technology (IEMEST); Palermo Italy
4. Department of Clinical and Experimental Medicine; School of Medicine; University of Florence; Florence Italy
5. Inter-institutional Department for Continuity of Care of Empoli; School of Medicine; University of Florence; Florence Italy