In all arms, patients undergo swallowing function, dietary, body composition, muscle, and physical and functional performance measurements at baseline and at 1, 3, and 6 months post-therapy. Quality of life, salivary production, fatigue, and symptoms (including swallowing/eating foods, appetite, weight loss/nutrition, pain, and speech/communication) are assessed at baseline and at 1, 3, and 6 months post-therapy. Anthropometric measurements are also performed at the above time points and at mid-therapy.