Vasectomy, cigarette smoking, and age at first sexual intercourse as risk factors for prostate cancer in middle-aged men

Biometry. The Principles and Practice of Statistics in Biological Research

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Biological Research, Engineering, Measurement +6

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Mortality in relation to smoking: 20 years' observations on male British doctors.

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Tobacco Cessation, Aging, British Doctors +18

Use of Contraception in the United States, 1982

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Smoking in relation to the death rates of one million men and women.

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Tobacco Cessation, Tobacco Control, Mortality Studies +15