[1] Fox Chase Canc Ctr, Dept Radiat Oncol, 333 Cottman Ave, Philadelphia, PA 19111 USA
[2] Univ Chicago, Dept Radiat & Cellular Oncol, Chicago, IL 60637 USA
[3] Washington Univ, Dept Radiat Oncol, St Louis, MO 63110 USA
[4] Univ Texas MD Anderson Canc Ctr, Dept Radiat Oncol, Houston, TX 77030 USA
[5] Univ Michigan, Dept Internal Med, Div Hematol & Oncol, Ann Arbor, MI 48109 USA
[6] Univ Chicago, Dept Surg, 5841 S Maryland Ave, Chicago, IL 60637 USA
[7] Johns Hopkins Univ, Dept Med Oncol, Baltimore, MD USA
[8] Duke Univ, Dept Med Oncol, Durham, NC USA
[9] Thomas Jefferson Univ, Dept Radiat Oncol, Philadelphia, PA 19107 USA
[10] Fox Chase Canc Ctr, Dept Hematol & Med Oncol, 7701 Burholme Ave, Philadelphia, PA 19111 USA
[11] Emory Univ, Atlanta Vet Affairs Hlth Care Syst, Dept Radiat Oncol, Atlanta, GA 30322 USA