1. Department of Neurology, New York Presbyterian Hospital/Columbia University Irving Medical Center (A.E.B., J.G.).
2. Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, MA (H.J.A.).
3. Boston Medical Center, MA (H.J.A.).
4. Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center Nijmegen, the Netherlands (F.-E.d.L., N.A.H.).