1. Johns Hopkins University School of Nursing, Baltimore, Maryland, USA.
2. Digital Health Innovation Laboratory, Division of Cardiology, Department of Medicine, Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
3. Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
4. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
5. Center for Health Equity, Johns Hopkins University, Baltimore, Maryland, USA.
6. Department of Health, Behavior, and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
7. Johns Hopkins University Whiting School of Engineering, Baltimore, Maryland, USA.
8. Optimal Aging Institute and Division of Epidemiology, Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA.