[1] Univ Chicago Med, Dept Surg, 5841 S Maryland Ave,MC 4062, Chicago, IL 60637 USA
[2] Indiana Univ Sch Med, Dept Surg, Indianapolis, IN 46202 USA
[3] Massachusetts Gen Hosp, Dept Surg, Boston, MA 02114 USA
[4] Univ Ottawa, Sch Epidemiol & Publ Hlth, Ottawa, ON, Canada
[5] Monash Univ, Eastern Hlth Clin Sch, Dept Surg, Melbourne, Vic, Australia
[6] Melbourne Upper GI Surg Grp, Melbourne, Vic, Australia
[7] UTHlth, McGovern Med Sch, Ctr Intervent Gastroenterol UTHlth iGUT, Houston, TX USA
[8] Univ Florida, Div Gastroenterol Hepatol & Nutr, Gainesville, FL USA
[9] Dartmouth Hitchcock Med Ctr, Dept Surg, Lebanon, NH 03766 USA
[10] Univ Calif Irvine, Dept Surg, Irvine, CA 92717 USA
[11] Cambridge Hlth Alliance, Dept Surg, Cambridge, MA USA
[12] Milford Reg Med Ctr, Milford, MA USA
[13] Univ Michigan, Dept Surg, Ann Arbor, MI 48109 USA
[14] Texas Tech Univ, Hlth Sci Ctr, Dept Surg, Lubbock, TX 79409 USA
[15] Thomas Jefferson Univ Hosp, Dept Surg, Philadelphia, PA 19107 USA
[16] Florida Atlantic Univ, Dept Surg, Boca Raton, FL 33431 USA
[17] Winn Army Community Hosp, Dept Surg, Ft Stewart, GA USA
[18] Gelre Hosp, Dept Surg, Zutphen, Netherlands
[19] East Carolina Univ, Dept Surg, Greenville, NC 27858 USA
[20] SUNY Stony Brook, Dept Surg, Stony Brook, NY 11794 USA