[1] Univ Pittsburgh, Med Ctr, Surg Oncol, Pittsburgh, PA 15260 USA
[2] Univ Iowa Hosp & Clin, Dept Surg, Iowa City, IA 52242 USA
[3] UT MD Anderson Canc Ctr, Surg Oncol, Houston, TX USA
[4] Mem Sloan Kettering Canc Ctr, Dept Surg, 1275 York Ave, New York, NY 10021 USA
[5] NorthShore Univ HealthSyst, Surg, Evanston, IL USA
[6] Univ Penn, Dept Surg, Philadelphia, PA 19104 USA
[7] Wake Forest Univ, Surg Oncol Gen Surg, Winston Salem, NC 27101 USA
[8] Univ Illinois, Canc Ctr, Surg, Chicago, IL USA
[9] Orlando Hlth UF Hlth Canc Ctr, Surg, Orlando, FL USA
[10] Virginia Commonwealth Univ, Sch Med, Dept Surg, Richmond, VA USA
[11] Virginia Commonwealth Univ, Massey Canc Ctr, Richmond, VA USA
[12] Univ Miami, Sch Med, Dept Surg Surg Oncol, Miami, FL USA
[13] Univ Tennessee, West Canc Ctr, Surg, Memphis, TN USA
[14] Madigan Army Med Ctr, Gen Surg, Lakewood, WA USA
[15] Vanderbilt Univ, Surg, 221 Kirkland Hall, Nashville, TN 37235 USA
[16] Univ Chicago, Chicago, IL 60637 USA
[17] Carolinas Med Ctr, Charlotte, NC 28203 USA
[18] Northwestern Univ, Feinberg Sch Med, Surg, Chicago, IL 60611 USA
[19] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA