1. From the University of Edinburgh and NHS Borders (P.D.S.), NHS Borders (A.W.B., R.D.), University College Medical School (R.C.), London, University of Edinburgh (J.F.F.); and University Department of Geriatric Medicine (P.D.S.), Royal Infirmary, Edinburgh; Department of Epidemiology and Public Health (R.C.); Borders General Hospital (R.D.); and School of Clinical Sciences and Community Health (J.F.F.), The University of Edinburgh, United Kingdom.