1. Division of Cardiovascular Medicine Department of Medicine Perelman School of Medicine University of Pennsylvania Philadelphia PA USA
2. Russell H. Morgan Department of Radiology and Radiological Science The Johns Hopkins University School of Medicine Baltimore MD USA
3. Department of Medicine Section of Critical Care Rady Faculty of Health Sciences University of Manitoba Winnipeg MB Canada
4. Department of Biomedical Engineering The Johns Hopkins University School of Medicine Baltimore MD USA
5. Department of Electrical Engineering Johns Hopkins University Baltimore MD USA
6. Sidney Kimmel Comprehensive Cancer CenterThe Johns Hopkins University School of Medicine Baltimore MD USA