Unilateral Radiotherapy for the Treatment of Tonsil Cancer - Chronowski, Gregory M.; Garden, Adam S.; Morrison, William H.; Frank, Steven J.; Schwartz, David L.; Shah, Shalin J.; Beadle, Beth M.; Gunn, G. Brandon; Kupferman, Michael E.; Ang, Kian K.; Rosenthal, David I. (International Journal of Radiation Oncology, Biology, Physics, 2012)