title: On the etiology of cancer of the lower lip.
mesh_terms: D000368:Aged; D002280:Basal Cell Carcinoma / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008048:Lip Neoplasms / Q000139:chemically induced / Q000209:etiology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009790:Occupations; D012878:Skin Neoplasms / Q000601:surgery; D012907:Smoking; D013177:Sports; D013471:Sunburn / Q000150:complications; D013472:Sunlight; D013997:Time Factors