求助三篇英文文献 谢谢

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http://www.ncbi.nlm.nih.gov/pubmed/20722781# Z1 A' l* Z- |' s
Increased risk of stroke among men with erectile dysfunction: a nationwide population-based study. S8 @& _+ \% u, o. |  G+ B2 R
http://www.ncbi.nlm.nih.gov/pubmed/19776750
1 G4 [0 [+ }' X% h& Q$ f3 [Is erectile dysfunction a predictor of cardiovascular events or stroke? A prospective study using a validated questionnaire$ K' _! D+ Q, |7 _
http://www.ncbi.nlm.nih.gov/pubmed/20233287
0 f) ?! [- O2 t. Y  ~* |* nMale sexuality and cardiovascular risk. A cohort study in patients with erectile dysfunction

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! B% ]4 P' m  ^# e5 i6 \给力，谢谢

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$ U1 N' [; I  Y* h  u/ ?同学，第三个不对啊？