S0217, Adjuvant Cisplatin and Docetaxel After Complete Resection Stage III or IV Head and Neck Cancer

head and neck cancer, stage iii squamous cell carcinoma of the lip and oral cavity, stage iv squamous cell carcinoma of the lip and oral cavity, stage iii squamous cell carcinoma of the paranasal sinus and nasal cavity, stage iv squamous cell carcinoma of the paranasal sinus and nasal cavity, stage iii salivary gland cancer, stage iv salivary gland cancer, stage iii squamous cell carcinoma of the hypopharynx, stage iv squamous cell carcinoma of the hypopharynx, stage iii squamous cell carcinoma of the larynx, stage iv squamous cell carcinoma of the larynx, stage iii squamous cell carcinoma of the oropharynx