1. Department of Internal Medicine; I.R.C.C.S. “a.O.U. San Martino-IST” and University of Genoa; Genova Italy
2. Department of Internal Medicine; Gastroenterology Unit I.R.C.C.S. “a.O.U. San Martino-IST” and University of Genoa; Genova Italy
3. Department of Health Sciences; I.R.C.C.S. “a.O.U. San Martino-IST” and University of Genoa; Genova Italy
4. Immunohematology and Transfusion Centre; I.R.C.C.S. “a.O.U. San Martino-IST” and University of Genoa; Genova Italy