1. From the Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA (C.D.A., A.B., W.J.D., V.V., N.S.R., R.S., K.L.F., J.R); Department of Neurology, Massachusetts General Hospital, Boston, MA (C.D.A., A.B., W.J.D., V.V., N.S.R., A.V., S.M.G., K.L.F., J.R.); Hemorrhagic Stroke Research Group, Massachusetts General Hospital, Boston, MA (C.D.A., A.B., W.J.D., K.S., A.M.A., V.V., N.S.R., A.V., J.N.G., S.M.G., J.R.); Program in Medical and Population Genetics, Broad Institute,...