EF5 Compared With Other Methods of Detecting Oxygen Levels in Tumor Cells of Patients With Head and Neck Cancer

head and neck cancer, stage i squamous cell carcinoma of the hypopharynx, stage i squamous cell carcinoma of the larynx, stage i squamous cell carcinoma of the lip and oral cavity, stage i squamous cell carcinoma of the nasopharynx, stage i squamous cell carcinoma of the oropharynx, stage i squamous cell carcinoma of the paranasal sinus and nasal cavity, stage ii squamous cell carcinoma of the hypopharynx, stage ii squamous cell carcinoma of the larynx, stage ii squamous cell carcinoma of the lip and oral cavity, stage ii squamous cell carcinoma of the nasopharynx, stage ii squamous cell carcinoma of the oropharynx