1Division of General Internal Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2Section of General Internal Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut.
3Department of Health Policy and Management, Yale School of Public Health, New Haven, Connecticut.
4Department of Neurology, Yale School of Medicine, New Haven, Connecticut.
5Global Health Mission Area, Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland.
6Department of Medical Ethics and Health Policy, University of Pennsylvania Perelman School of Medicine, Philadelphia.
7Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland.