Human Papillomavirus (HPV)- Related Squamous Cell Carcinoma of the Oropharynx (SCCOP) is Associated With Decreased Late Toxicity After Definitive Concurrent Chemoradiotherapy (CRT) - Koyfman, S.; Rodriguez, C.; Kumar, A.M.S.; Rybicki, L.A.; Saxton, J.P.; Scharpf, J.; Burkey, B.; Hoschar, A.P.; Greskovich, J.F.; Adelstein, D.J. (International Journal of Radiation Oncology, Biology, Physics, 2011)