Tobacco smoking and the British doctors' cohort.
Boyle
P
P
D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D009369:Neoplasms / Q000209:etiology / Q000401:mortality*; D010820:Physicians; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*