1. Department of Neurology, Baystate Medical Center, University of Massachusetts Medical School–Baystate, Springfield, Massachusetts
2. Institute for Healthcare Delivery and Population Science and Department of Medicine, University of Massachusetts Medical School–Baystate, Springfield, Massachusetts
3. Department of Medicine, Baystate Medical Center, University of Massachusetts Medical School–Baystate, Springfield, Massachusetts
4. Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts