1 National Clinician Scholars Program at Yale University, New Haven, Connecticut, USA
2 Section of Geriatrics, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
3 Mongan Institute, Massachusetts General Hospital, Boston, Massachusetts, USA
4 Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
5 Department of Psychiatry, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts, USA
6 Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
7 Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts, USA
8 Harvard Kennedy School, Cambridge, Massachusetts, USA
9 National Bureau of Economic Research, Cambridge, Massachusetts, USA
10 Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
11 Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA