A maximum of one prior radiotherapy regimen, curative or palliative, to the head and neck is allowed; if the radiation is combined with chemotherapy and/or cetuximab, a minimum of 4 months must elapse between the end of radiotherapy and registration; if the radiation is given alone, a minimum of 8 weeks must elapse between the end of radiotherapy and registration; a minimum of 3 weeks must elapse between prior radiation to other areas and registration [clinicaltrials_resource:229a8a2686af3c4e384800e2d92be61e]