[1] Amer Coll Surg, Canc Programs, Chicago, IL 60611 USA
[2] Loyola Univ Chicago, Stritch Sch Med, Dept Surg, Maywood, IL 60153 USA
[3] Northwestern Univ, Feinberg Sch Med, Dept Surg, Chicago, IL USA
[4] Yale Sch Med, Dept Surg, New Haven, CT USA
[5] Brigham & Womens Hosp, Dept Surg, Boston, MA USA
[6] Mayo Clin, Dept Surg, Rochester, MN USA
[7] Duke Univ, Med Ctr, Dept Surg, Durham, NC USA
[8] Rutgers Canc Inst New Jersey, Div Surg Oncol, New Brunswick, NJ USA
[9] Amer Canc Soc, Dept Surveillance & Hlth Equ Sci, Atlanta, GA USA
[10] Baptist Hlth South Florida, Miami, FL USA
[11] Univ Texas MD Anderson Canc Ctr, Houston, TX USA
[12] H Lee Moffitt Canc Ctr & Res Inst, Collaborat Data Serv Core, Tampa, FL USA
[13] Univ Kentucky, Coll Med, Dept Surg, Lexington, KY USA
[14] Univ Iowa, Carver Coll Med, Dept Surg, Iowa City, IA USA