Sgourakis George, Kontovounisios Christos, Karaliotas Constantine
Second Surgical Department and Surgical Oncology Unit of "Korgialenio - Benakio", Red Cross Hospital, Athens, Greece.
Gastroenterology. 2011 Dec;141(6):e1-2. doi: 10.1053/j.gastro.2010.10.062. Epub 2011 Oct 25.