1The Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
2Department of Medicine, Cardiology, University of Washington, Seattle, WA 98195, USA
3Department of Pathology, University of Washington, Seattle, WA 98109, USA
4Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
5Center for Cardiovascular Biology, University of Washington, Seattle, WA 98109, USA