4. Ratings of Mucositis. Oral mucositis ratings will be completed pretreatment and at the same 5 intervals after treatment. The scale rates ulceration on a 4-point scale (0 = no lesions to 3 = a lesion > 3 cm2) and erythema on a 3-point scale (0 = none; 1 = not severe; 2 = severe) at 10 locations in the oral cavity (upper and lower lip, right and left cheek, right and left ventral and lateral tongue, floor of mouth, soft palate/fauces and hard palate). The mucositis ratings will be done by the participating speech-language pathologist (SLP) trained in using the scale.