Primary Tumor Metabolic Volume Improves Risk Prediction of Long-term Outcomes in Patients with Oropharyngeal Squamous Cell Carcinoma Treated with Intensity Modulated Radiation Therapy (IMRT) and Chemotherapy - Lim, R.C.; Schoder, H.; Eaton, A.; Gonen, M.; Rao, S.; Sherman, E.; Wong, R.; Setton, J.; Lee, N. (International Journal of Radiation Oncology, Biology, Physics, 2011)