1. From the Louisiana State University Health Sciences Center, New Orleans, La (M.S., W.P.N., G.R.); Elucid Bioimaging, 225 Main St, Wenham, MA 01984 (X.M., D.P., S.S.P., M.R., J.C.K., A.J.B.); Department of Quantitative Health Sciences, Cleveland Clinic Foundation, Cleveland, Ohio (N.A.O.); and Perlman Advisory Group, Boynton Beach, Fla (E.S.P.).