1. Cardiovascular Research Center, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, MA, USA
2. Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
3. Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA
4. Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
5. Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, MA, USA
6. Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA
7. Henry and Allison McCance Center for Brain Health, Massachusetts General Hospital, Boston, MA, USA