1) Slaughter DP, Southwick HW and Smejkal W: "Field cancerization" in oral stratified squamous epithelium. Clinical implications of multicentric origin. Cancer 6 (5) : 963-968, 1953.
2) Zeka A, Gore R and Kriebel D: Effects of alcohol and tobacco on aerodigestive cancer risks; a meta-regression analysis. Cancer Causes Control 14 (9) : 897-906, 2003.
3) Yokoyama A, Watanabe H, Fukuda H, et al: Multiple cancers associated with esophageal and oropharyngolaryngeal squamous cell carcinoma and the aldehyde dehydrigenase-2 genotype in male Japanese drinkers. Cancer Epidemiol Biomarkers Prey 11 (9) : 895-900, 2002.