| Affiliation: | 1. Department of Health Policy and Management, Johns Hopkins School of Public Health, Baltimore, Maryland, USA;2. Department of Kinesiology, Towson University, Baltimore, Maryland, USA;3. Division of General Internal Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA;4. Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland, USA;5. Johns Hopkins Carey Business School, Baltimore, Maryland, USA;6. Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA;7. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA |
