1. Boring CC, Squires TS, Tong T, et al. Cancer Statistics 1992;42:19.
2. Decker J, Goldstein JD. Risk factors in head and neck cancer. N Engl J Med 1982;306:1151.
3. Lippman SM, Hong WK. Second malignant tumors in head and neck squamous cell carcinoma: the overshadowing threat for patients with early-stage disease [editorial]. Int J Radiat Oncol BiolPhys 1989;17:691.
4. Wynder EL, Hoffman D. Tobacco. In: Schottenfield D, Fraumeri JF Jr, eds. Cancer Epidemiology and Prevention. Philadelphia: Saunders, 1982:277–292.
5. Boyle P, Macfarlane GJ, McGinn R, et al. International epidemiology of head and neck cancer. In: de Vries N, Gluckman JL, eds. Primary Tumors in the Head and Neck. Stuttgart: Thieme, 1990:80–138.