[1] NYU, Dept Surg, Sch Med, New York, NY 10016 USA
[2] Univ Kansas, Dept Obstet & Gynecol, Sch Med, Kansas City, KS USA
[3] Univ Florida, Coll Med, Dept Surg, Gainesville, FL USA
[4] Univ Arkansas Med Sci, Dept Surg, Little Rock, AR 72205 USA
[5] Amer Coll Surg, Chicago, IL USA
[6] Stanford Univ, Sch Med, Dept Cardiothorac Surg, Stanford, CA 94305 USA
[7] Duke Univ, Sch Med, Dept Surg, Durham, NC USA
[8] Vanderbilt Univ, Dept Surg, Sch Med, Nashville, TN 37240 USA
[9] Univ Michigan, Sch Med, Dept Surg, Ann Arbor, MI USA
[10] Harvard Med Sch, MGH Dept Surg, Boston, MA 02115 USA
[11] Dartmouth Coll, Dept Surg, Geisel Sch Med, Hanover, NH 03755 USA
[12] Med Coll Georgia, Dept Surg, Augusta, GA 30912 USA
[13] Loyola Univ, Dept Surg, Stritch Sch Med, Chicago, IL 60611 USA
[14] Johns Hopkins Univ, Sch Med, Dept Surg, Baltimore, MD 21205 USA
[15] Oakland Univ, Dept Surg, William Beaumont Sch Med, Rochester, MI 48063 USA
[16] Hackensack Meridian Sch Med, Dept Surg, Nutley, NJ USA
[17] Univ Texas Southwestern Med Ctr Dallas, Dept Surg, Dallas, TX USA
[18] NCI, Gastrointestinal & Other Canc Res Grp, Rockville, MD USA
[19] Univ N Carolina, Sch Med, Dept Surg, Chapel Hill, NC 27515 USA