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## Abstract A previously reported negative association between a high index of dietary vitamin A and lung cancer incidence was confirmed in an extended followβup, covering 11 1/2 years, of 13,785 men and 2,928 women. Responses to a postal questionnaire provided the dietary information. Relationship
## Abstract Zinc, copper and selenium are important cofactors for several enzymes that play a role in maintaining DNA integrity. However, limited epidemiologic research on these dietary trace metals and lung cancer risk is available. In an ongoing study of 1,676 incident lung cancer cases and 1,676
We studied dietary risk factors for lung cancer among never-smokers in a population-based case-control study in Stockholm, 1989Stockholm, -1995. . Study subjects were older than 30 years of age and had never smoked regularly. A total of 124 cases (35 men, 89 women) and 235 controls (72 men, 163 wome