Humerickhouse RA, Dolan ME, Haraf DJ, Brockstein B, Stenson K, Kies M, Sulzen L, Ratain MJ, Vokes EE. Phase I study of eniluracil, a dihydropyrimidine dehydrogenase inactivator, and oral 5-fluorouracil with radiation therapy in patients with recurrent or advanced head and neck cancer. Clin Cancer Res. 1999 Feb; 5(2):291-8.