1. From the Department of Health Sciences Research (L.R.S., N.D.S., X.Y., V.L.R., S.M.D.), Division of Cardiovascular Diseases, Department of Medicine (V.L.R., S.M.D.), and Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery ((L.R.S., N.D.S., X.Y., V.L.R., S.M.D), Mayo Clinic, Rochester, MN; and OptumLabs, Cambridge, MA (N.D.S.).