[1] Univ Chicago, Dept Surg, 5841 S Maryland Ave, Chicago, IL 60637 USA
[2] Santa Maria Clin, Dept Surg, Providencia, Chile
[3] Univ Utah, Huntsman Canc Inst, Dept Gen Surg, Salt Lake City, UT USA
[4] Univ Chicago, Dept Gastroenterol, Chicago, IL 60637 USA
[5] Univ Tennessee, Dept Surg, Hlth Sci Ctr, Memphis, TN USA
[6] Univ Colorado, Dept Surg, Aurora, CO USA
[7] Univ Kansas, Med Ctr, Dept Surg, Div Surg Oncol, Kansas City, KS 66103 USA
[8] Cedars Sinai Med Ctr, Los Angeles, CA 90048 USA
[9] Drexel Univ, Dept Surg, Coll Med, Philadelphia, PA 19104 USA
[10] AMITA Hlth, Dept Surg, La Grange, IL USA
[11] Univ N Carolina, Dept Surg, Div Pediat Surg, Sch Med, Chapel Hill, NC 27515 USA
[12] Roswell Park Comprehens Canc Ctr, Surg Oncol, Buffalo, NY USA
[13] Univ Calif San Diego, Dept Surg, La Jolla, CA 92093 USA
[14] Rutgers Canc Inst New Jersey, Gastrointestinal Surg Oncol, New Brunswick, NJ USA
[15] Univ N Carolina, Div Surg Oncol & Endocrine Surg, Dept Surg, Chapel Hill, NC 27515 USA
[16] Univ Chicago, Dept Surg, Sect Pediat Surg, 5841 S Maryland Ave, Chicago, IL 60637 USA
[17] NYU, Dept Surg, Sch Med, New York, NY 10016 USA
[18] Univ Texas MD Anderson Canc Ctr, Surg Oncol, Houston, TX 77030 USA
[19] Univ Wisconsin, Dept Surg, Madison, WI USA
[20] SUNY Stony Brook, Dept Surg, Stony Brook, NY 11794 USA
[21] Univ Arizona, Dept Surg, Tucson, AZ USA
[22] Univ Calif San Diego, Dept Surg, Div Surg Oncol, Sharp HealthCare,Sch Med, La Jolla, CA 92093 USA
[23] Ascens St John Hosp, Surg Oncol, Grosse Pointe Woods, MI USA
[24] Inova Schar Canc Inst, Surg Oncol, Fairfax, VA USA
[25] Duke Univ, Dept Surg, Durham, NC USA
[26] Univ Chicago, Dept Med, 5841 S Maryland Ave, Chicago, IL 60637 USA
[27] Univ Iowa Hosp & Clin, Dept Surg, Iowa City, IA 52242 USA
[28] Univ Michigan, Sch Med, Dept Surg, Ann Arbor, MI USA
[29] Univ Pittsburgh, Dept Surg, Surg Oncol, Pittsburgh, PA USA
[30] Med Coll Wisconsin, Dept Surg, 8700 W Wisconsin Ave, Milwaukee, WI 53226 USA
[31] Massachusetts Gen Hosp, Dept Surg, Boston, MA 02114 USA
[32] Univ Chicago Med, Dept Radiol, Chicago, IL 60637 USA
[33] H Lee Moffitt Canc Ctr & Res Inst, Gastrointestinal Oncol, Tampa, FL USA
[34] Virginia Commonwealth Univ, Hunter Holmes McGuire Vet Adm Med Ctr, Surg Oncol, Massey Canc Ctr, Richmond, VA USA
[35] Baylor Univ, Med Ctr, Dept Surg, Dallas, TX 75246 USA
[36] Cedars Sinai Med Ctr, Dept Surg, Surg Oncol, Los Angeles, CA 90048 USA
[37] SUNY Stony Brook, Dept Surg, Div Surg Oncol, Stony Brook, NY 11794 USA
[38] Oregon Hlth & Sci Univ, Dept Surg, Portland, OR 97201 USA
[39] Tufts Med Ctr, Surg Oncol, Boston, MA 02111 USA
[40] Univ Toronto, Div Gen Surg, Sinai Hlth Syst, Toronto, ON, Canada
[41] Mayo Clin, Dept Surg, Rochester, MN USA
[42] Inst Canc Care Mercy, Surg Oncol, Baltimore, MD USA
[43] Univ Maryland, Sch Med, Dept Surg, Baltimore, MD 21201 USA
[44] Univ Chicago, Dept Radiol, Chicago, IL 60637 USA
[45] Univ Chicago, Dept Pathol, 5841 S Maryland Ave, Chicago, IL 60637 USA
[46] Vanderbilt Univ, Dept Surg, Med Ctr, Nashville, TN 37240 USA
[47] MedStar Georgetown Univ, Surg Oncol, Med Ctr, Washington, DC USA
[48] Montefiore Med Ctr, Dept Surg, 111 E 210th St, Bronx, NY 10467 USA
[49] Johns Hopkins Univ, Dept Surg, Baltimore, MD USA
[50] Hosp Univ Penn, Dept Surg, 3400 Spruce St, Philadelphia, PA 19104 USA