1. Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA;
2. OptumLabs, Visiting Fellow, Cambridge, MA, USA;
3. Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA;
4. Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA