Affiliation: | (1) Department of Radiology, University of California School of Medicine, 94143 San Francisco, California, USA;(2) Department of Pediatrics, University of California School of Medicine, 94143 San Francisco, California, USA;(3) Cardiovascular Research Institute, University of California School of Medicine, 94143 San Francisco, California, USA;(4) Present address: Hershey Medical Center Hershey, PA |