Correction

Nijjer SS, Pabari PA, Stegemann B, Palmieri V, Leyva F, Linde C, Freemantle N, Davies JE, Hughes AD, Francis DP. The Limit of Plausibility for Predictors of Response: Application to Biventricular Pacing. J Am Coll Cardiol Img 2012;5:1046–65.

Please note that equation 3 was noted incorrectly in the text. The correct equation is printed below:

ObservedR2=UnderlyingR2×R2contractionfactorimposedbyDyssynchronyMarker⁡×⁡R2contractionfactorimposedbyResponseMarker︷CombinedR2Contraction Factor

The authors apologize for this error.

• American College of Cardiology Foundation