1. Department of Cardiovascular Diseases, Division of Circulatory Failure (S.S., A.F., H.C., G.L.), Rochester, MN.
2. Division of Community Internal Medicine, Geriatrics, and Palliative Care (R.M.C., P.B.), Rochester, MN.
3. Mayo Clinic Ambulance (R.M.C., C.L., M.J.), Rochester, MN.
4. Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN (R.C.).
5. Department of Nursing (P.B.), Rochester, MN.