1. Department of Radiology and Radiological Science, Division of Cardiovascular Imaging, Medical University of South Carolina, 25 Courtenay Dr, MSC 226, Charleston, SC 29425.
2. Department of Radiology, Division of Pediatric Radiology, Medical University of Graz, Graz, Austria.
3. Department of Radiology, Azienda Ospedaliero Universitaria, Cagliari, Italy.
4. Center for Medical Imaging, University Medical Center Groningen, Groningen, The Netherlands.
5. Department of Neuroscience, Imaging and Clinical Science, Section of Diagnostic Imaging and Therapy—Radiology Division, G. d'Annunzio University, Chieti, Italy.
6. Postgraduate School in Radiodiagnostics, Universita' degli Studi di Milano, Milan, Italy.
7. Department of Medicine, Division of Cardiology, Medical University of South Carolina, Charleston, SC.