求助三篇英文文献 谢谢

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http://www.ncbi.nlm.nih.gov/pubmed/20722781
! o$ Q) B3 }8 P5 G0 u+ nIncreased risk of stroke among men with erectile dysfunction: a nationwide population-based study+ f' b  {7 X2 @) X1 m$ h
http://www.ncbi.nlm.nih.gov/pubmed/19776750! C0 H+ z8 ^1 y# Q- g6 b
Is erectile dysfunction a predictor of cardiovascular events or stroke? A prospective study using a validated questionnaire
5 I2 j, s) y) k0 F  u! Uhttp://www.ncbi.nlm.nih.gov/pubmed/20233287" `! `1 c# p% v: d1 P
Male sexuality and cardiovascular risk. A cohort study in patients with erectile dysfunction

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$ L9 Y# J) Y4 B  c- c给力，谢谢

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同学，第三个不对啊？

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