1. From the Department of Emergency Medicine, Division of Emergency Medicine Research (E.P.H.), Knowledge and Evaluation Research Unit (E.P.H., M.C., N.D.S.), Department of Health Sciences Research, Division of Health Care Policy and Research (E.P.H., N.D.S.), and Division of Cardiovascular Diseases (M.C.), Mayo Clinic, Rochester, MN; Gordon and Betty Moore Foundation, Palo Alto, CA (D.L.F.); Palo Alto Medical Foundation Research Institute, Palo Alto, CA (D.L.F.); and Department of Medicine, University...