Mortality in relation to smoking: 50 years' observations on male British doctors.
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. PARTICIPAN...
| Main Authors: | , , , |
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| 格式: | Journal article |
| 語言: | English |
| 出版: |
2004
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