31，Sachett DL,Richardson WS,RosenbergW,et al.On the Need for Evidence-Based Medicine In:Evedence-Based Medicine How to practiceand teach EBM.des.David L.Sachett,W.Soctt Richerdson et al.New York 1997.
46，Lynch P，Webb-peploe MM.The Pterminal vector in lead V1 of theelectrocardiogram in cor pulmonale.J Electrocardiol，1982；15（3）∶205.
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