1. Department of Medicine and Radiology, Stanford University School of Medicine, Stanford, CA 94305.
2. Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA 94305.
3. Department of Vascular Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands.
4. Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305.
5. Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands.
6. Institute of Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305.