1. From the Minneapolis Heart Institute Foundation at Abbott Northwestern Hospital, Minneapolis (K.J.G., C.E.S., M.R.M., K.M.H., B.T.U., A.S.T., D.M.L., N.B., T.D.H.); Center for Healthcare Innovation, Allina Hospitals and Clinics, Minneapolis (L.L.B.); Department of Emergency Medicine, Abbott Northwestern Hospital, Minneapolis (P.A.S.); and Allina Medical Transportation, St. Paul (P.A.S.), MN.