1. Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology; Massachusetts General Hospital, Harvard Medical School; Boston MA USA
2. Department of Computer Science; Institute of Mathematics and Statistics, University of São Paulo; São Paulo Brazil
3. Siemens Healthcare; Charlestown MA USA
4. Cardiovascular Research Center, Cardiology Division; Massachusetts General Hospital, Harvard Medical School; Boston MA USA