Mortality in relation to smoking: 50 years' observations on male British doctors.

@article{Doll1994MortalityIR,
  title={Mortality in relation to smoking: 50 years' observations on male British doctors.},
  author={Richard Doll and Richard Peto and Jillian Boreham and Isabelle Sutherland},
  journal={BMJ},
  year={1994},
  volume={328 7455},
  pages={1519}
}
OBJECTIVE To compare the hazards of cigarette smoking in men who formed their habits at different periods, and the extent of the reduction in risk when cigarette smoking is stopped at different ages. DESIGN Prospective study that has continued from 1951 to 2001. SETTING United Kingdom. PARTICIPANTS 34 439 male British doctors. Information about their smoking habits was obtained in 1951, and periodically thereafter; cause specific mortality was monitored for 50 years. MAIN OUTCOME… CONTINUE READING
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