[1] Virginia Commonwealth Univ, Richmond, VA USA
[2] NRG Oncol Stat & Data Management Ctr, Philadelphia, PA USA
[3] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[4] Rutgers Canc Inst New Jersey, New Brunswick, NJ USA
[5] Thomas Jefferson Univ Hosp, Philadelphia, PA 19107 USA
[6] Fox Chase Canc Ctr, 7701 Burholme Ave, Philadelphia, PA 19111 USA
[7] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA
[8] Univ Maryland, Sch Med, Baltimore, MD 21201 USA
[9] Michigan Canc Res Consortium CCOP, Ann Arbor, MI USA
[10] Massachusetts Gen Hosp, Cape Cod Hosp Accrail, Hyannis, MA USA
[11] Wake Forest Baptist Hlth Accruals Arizona Oncol S, Winston Salem, NC USA
[12] Med Coll Wisconsin, Milwaukee, WI 53226 USA
[13] Univ Colorado Denver, Aurora, CO USA
[14] Univ Michigan, Med Ctr, Ann Arbor, MI USA
[15] Ohio State Univ, Columbus, OH 43210 USA