1. Department of Radiology University of Pennsylvania Philadelphia Pennsylvania USA
2. Siemens Medical Solutions USA Inc. Malvern Pennsylvania USA
3. Penn Statistics in Imaging and Visualization Center Department of Biostatistics and Epidemiology Perelman School of Medicine Philadelphia Pennsylvania USA
4. Department of Biomedical Engineering Johns Hopkins University School of Medicine Baltimore Maryland USA
5. The Russell H. Morgan Department of Radiology and Radiological Science Johns Hopkins University School of Medicine Baltimore Maryland USA
6. F.M. Kirby Research Center for Functional Brain Imaging Kennedy Krieger Institute Baltimore Maryland USA