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From the ¹University of Pittsburgh Medical Center, Presbyterian Hospital, Cardiovascular Institute, Pittsburgh, Pennsylvania and ²Carnegie Mellon University, Pittsburgh, Pennsylvania.
The authors report no financial relationships or conflicts of interest regarding the content herein.
Manuscript submitted March 3, 2011, provisional acceptance given April 29, 2011, final version accepted June 2, 2011.
Address for correspondence: Brion M. Winston, MD, Brigham and Women's Hospital, Interventional Cardiology, 75 Francis Street, Boston, MA 02115. Email: brion.winston@gmail.com