[1] Univ Iowa, Iowa City, IA 52242 USA
[2] Mayo Clin, Dept Hlth Sci Res, Rochester, MN USA
[3] Mayo Clin, Rochester, MN USA
[4] Vanderbilt Ingram Canc Ctr, Nashville, TN USA
[5] Univ Colorado, Ctr Canc, Aurora, CO USA
[6] Mem Sloan Kettering Canc Ctr, Dept Colorectal Oncol, 1275 York Ave, New York, NY 10021 USA
[7] Duke Univ, Sch Med, Durham, NC USA
[8] Univ Calif San Francisco, San Francisco, CA 94143 USA
[9] Martin Luther Univ Halle Wittenberg, Halle, Germany
[10] Yale Canc Ctr, New Haven, CT USA
[11] Smilow Canc Hosp, New Haven, CT USA
[12] UCLA, Los Angeles, CA USA
[13] Azienda Osped Univ, Pisana Ospedale Santa Chiara, Pisa, Italy
[14] Hosp Clin Univ San Carlos, Madrid, Spain
[15] Amsterdam UMC, Canc Ctr Amsterdam, Dept Med Oncol, Amsterdam, Netherlands
[16] Austin Hlth, Wellness & Res Ctr, Olivia Newton John Canc, Heidelberg, Vic, Australia
[17] Univ Hosp Munich, LMU Munich, Munich, Germany
[18] Natl Canc Ctr Hosp East, Kashiwa, Chiba, Japan
[19] Franco British Inst, Levallois Perret, France