1. Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, California.
2. Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.
3. Molecular Imaging Program at Stanford (MIPS), Stanford University School of Medicine, Stanford, California.
4. Department of Pathology, Stanford University School of Medicine, Stanford, California.
5. Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, California.