1. From the Department of Neurology, Division of Neurocritical Care and Emergency Neurology (H.B.B., J.N.G., J.R.), Hemorrhagic Stroke Research Group (H.B.B., J.N.G., J.R.), J. Philip Kistler Stroke Research Center (H.B.B., J.N.G., J.R.), Department of Emergency Medicine (J.N.G.), Department of Radiology, Neuroradiology Service (J.M.R.), Massachusetts General Hospital, Harvard Medical School, Boston, MA; Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston,...