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Department of Surgery, Patti Hospital (ME), Patti, Italy.
1Hepatology Unit, Department of Medical and Pediatric Sciences, University of Catania, Catania, Italy.
2Department of Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania, Catania, Italy.
3Department of General Surgery, Hamad General Hospital, Doha, Qatar.
© 2015 The Korean Society of Coloproctology
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CONFLICT OF INTEREST: No potential conflict of interest relevant to this article was reported.