1. Department of Biomedical Engineering, Marquette University, Milwaukee, WI 53233; Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332
2. Pediatric Cardiology, Baylor College of Medicine, Houston, TX 77030
3. Department of Pediatrics, Division of Pediatric Cardiology, Medical College of Wisconsin Children's Wisconsin, Milwaukee, WI 53226
4. Department of Biomedical Engineering, Marquette University, Milwaukee, WI 53233; Departments of Pediatrics, Cardiovascular Medicine and Physiology, Medical College of Wisconsin, Wauwatosa, WI 53226