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PDFPage 71
. 1973 Feb;27(1):71. doi: 10.1136/jech.27.1.71
Prospective study of women using different methods of contraception.
M P Vessey
, R Doll
, R Peto
, C W Redman
M P Vessey
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R Doll
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R Peto
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C W Redman
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PMCID: PMC478771 PMID: 4717823