1. From The Neurovascular Clinical Science Unit (O.C.S., A.M., L.A.K., N.H., M.M., L.K., J.D., J.M., D.H., G.H., P.J.K.), Mater University Hospital, University College Dublin, Dublin, Ireland; Connolly Hospital (P.M.E.M.), Ireland; Beaumont Hospital (A.M.), Ireland; and the School of Public Health and Population Science (L.D.), University College Dublin, Dublin, Ireland.