[1] SUNY Buffalo, Jacobs Sch Med, Dept Surg, Buffalo, NY 14260 USA
[2] Yale Sch Med, Dept Surg, New Haven, CT USA
[3] Univ Massachusetts, Sch Med, Baystate Med Ctr, Dept Surg, Springfield, MA USA
[4] Univ Massachusetts, Sch Med, Baystate Med Ctr, Dept Med, Springfield, MA USA
[5] Lowell Gen Hosp, Lowell, MA USA
[6] Univ Calif San Diego, Sch Med, Dept Surg, San Diego, CA 92103 USA
[7] Oregon Clin, Dept Surg, Portland, OR USA
[8] IHU, Strasbourg, France
[9] Northwestern Univ, Feinberg Sch Med, Dept Surg, Chicago, IL 60611 USA
[10] Univ Penn Hlth Syst, Dept Med, Div Gastroenterol, Philadelphia, PA 19104 USA