[1] Univ Texas MD Anderson Canc Ctr, Dept Radiat Oncol, Houston, TX 77030 USA
[2] Amer Canc Soc, Atlanta, GA 30329 USA
[3] Emory Univ, Sch Med, Atlanta, GA USA
[4] Emory Univ, Dept Radiat Oncol, Atlanta, GA 30322 USA
[5] Univ Wisconsin, Dept Radiat Oncol, Madison, WI USA
[6] Vanderbilt Univ, Div Hematol Oncol, Memphis, TN USA
[7] Med Coll Wisconsin, Div Hematol Oncol, Milwaukee, WI 53226 USA
[8] MedNet Solut, Minnetonka, MN USA
[9] Univ Penn, Otorhinolaryngol Head & Neck Serv, Philadelphia, PA 19104 USA
[10] Washington Univ, Dept Internal Med, St Louis, MO USA
[11] Univ N Carolina, Dept Internal Med, Chapel Hill, NC USA
[12] Univ Washington, Dept Radiat Oncol, Seattle, WA 98195 USA
[13] Arizona Oncol Serv Fdn, Phoenix, AZ USA
[14] Univ Oklahoma, Dept Med Hematol Oncol, Oklahoma City, OK USA
[15] Christiana Care Hlth Syst, Wilmington, DE USA
[16] Pocono Med Ctr, E Stroudsburg, PA USA
[17] Thomas Jefferson Univ, Dept Radiat Oncol, Philadelphia, PA 19107 USA