1. From the Baker Heart Research Institute (A.M.D., C.D.G., B.A.K., Y.-L.L., K.L.B., C.M.R., G.L.J.); Department of Electronic Engineering (J.D.C.), LaTrobe University; and 2nd Australian National Blood Pressure Study (Y.-L.L, K.L.B., C.M.R., G.L.J.), Melbourne, Australia.