Cigarette smoking and bronchial carcinoma; effect of the association upon smoking habits of a group of doctors.
D002283:Carcinoma, Bronchogenic; D006184:Habits; D006801:Humans; D008175:Lung Neoplasms; D012907:Smoking / Q000009:adverse effects*; D014026:Nicotiana
LUNGS/neoplasms; SMOKING/injurious effects