1 Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA. Electronic address: zlatif@mgh.harvard.edu.
2 Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, USA.
3 Department of Bioengineering, Harvard University, Cambridge, Massachusetts, USA.
4 Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
5 Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA.
6 Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
7 Advanced Research Projects Agency for Health, Boston, Massachusetts, USA.