1. Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
2. Department of Pediatric and Adolescent Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
3. Department of Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
4. Department of Clinical Anatomy, Mayo Clinic, Rochester, MN 55905, USA