1. Department of Bioengineering, Stanford University School of Medicine, Stanford, California.
2. Department of Medicine (Division of Cardiology), Stanford University School of Medicine, Stanford, California.
3. Department of Radiology, Stanford University School of Medicine, Stanford, California.
4. Department of Medicine (Biomedical Informatics), Stanford University School of Medicine, Stanford, California.
5. Department of Pediatrics, Stanford University School of Medicine, Stanford, California.