Mahir Gachabayov1, Xiang Da Dong2, Rifat Latifi3, Roberto Bergamaschi4. 1. Department of Surgery, New York Medical College. 2. Department of Surgery, Westchester Medical Center. 3. Department of Surgery, New York Medical College, Westchester Medical Center. 4. Section of Colorectal Surgery, Department of Surgery New York Medical College, Westchester Medical Center.