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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1980 1
1981 1
1982 6
1983 8
1984 8
1985 6
1986 4
1987 2
1988 3
1989 2
1990 3
1991 2
2022 0
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Page 1
Are primary cancer prevention trials feasible?
Zelen M. Zelen M. J Natl Cancer Inst. 1988 Nov 16;80(18):1442-4. doi: 10.1093/jnci/80.18.1442. J Natl Cancer Inst. 1988. PMID: 3054126 Clinical Trial. No abstract available.
46 results