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ARTICLE | March 15, 1971" N0 a" r$ [* I9 }! V2 X
Periodic Breast Cancer Screening in Reducing Mortality From Breast Cancer+ H5 ]( P. ~: C/ {# {3 Y$ X) b/ f
Sam Shapiro; Philip Strax, MD; Louis Venet, MD0 _0 J6 L4 a* b* `/ W  u4 {( C
JAMA. 1971;215(11):1777-1785. doi:10.1001/jama.1971.03180240027005.. g4 Q- L* F/ }& T; P5 D% [
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地址：http://jama.jamanetwork.com/article.aspx?articleid=360624