[1] NRG Oncol, Houston, TX USA
[2] UT MD Anderson Canc Ctr, Houston, TX USA
[3] NRG Oncol, Pittsburgh, PA USA
[4] Univ Pittsburgh, Pittsburgh, PA USA
[5] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[6] Univ Pittsburgh, Inst Canc, Pittsburgh, PA USA
[7] Univ Pittsburgh, Sch Med, Pittsburgh, PA USA
[8] Baylor Coll Med, Houston, TX 77030 USA
[9] Rutgers Canc Inst New Jersey & Alliance, New Brunswich, NJ USA
[10] Univ Wisconsin, Carbone Canc Ctr, Madison, WI USA
[11] ECOG ACRIN, Madison, WI USA
[12] Univ Arizona, Ctr Canc, Tucson, AZ USA
[13] SWOG, Tucson, AZ USA
[14] British Columbia Canc Vancouver, Vancouver, BC, Canada
[15] CCTG Cochair, Vancouver, BC, Canada
[16] NRG Oncol, Gainesville, FL USA
[17] Univ Florida, Hlth Canc Ctr, Gainesville, FL USA