In the article by Chakir et al, “Mechanisms of Enhanced ß-Adrenergic Reserve From Cardiac Resynchronization Therapy,” which appeared in the March 10, 2009, issue of the journal (Circulation. 2009;119:1231–1240), the following correction should be made.
On page 1231 in the list of authors, the name “Kathryn Jacques” should read, “Kathryn M. Jaques-Robinson.”
This error has been corrected in the current online version of the article. The authors regret the error.