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Kaplan-Meier Curves of the Cumulative Incidence of Lung Cancer among Participants Receiving Active Treatment and Those Receiving Placebo. Omenn, G. S. et al. N Engl J Med 1996;334:1150-1155.
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Kaplan-Meier Curves of the Cumulative Incidence of Lung Cancer among Participants Receiving Active Treatment and Those Receiving Placebo Omenn, G. S. et al. N Engl J Med 1996;334:1150-1155