DOI:
10.1055/s-00000085
The Thoracic and Cardiovascular Surgeon
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References
Peduzzi P, Concato J, Feinstein AR, Holford TR.
Importance of events per independent variable in proportional hazards regression analysis. II. Accuracy and precision of regression estimates.
J Clin Epidemiol 1995;
48 (12) 1503-1510
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