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Comparative Study
. 1980 Jan 5;280(6206):44.
doi: 10.1136/bmj.280.6206.44.

Randomised controlled trials and retrospective controls

R Doll, R Peto
Comparative Study

Randomised controlled trials and retrospective controls

R Doll et al. Br Med J. .
No abstract available

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References

    1. Br J Cancer. 1976 Dec;34(6):585-612 - PubMed

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