1 Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
2 Department of English, College of Arts and Sciences, Emory University, N302 Callaway Memorial Center, Atlanta, GA, USA.
3 Department of Internal Medicine, Thomas Roth Sleep Disorders and Research Center, Henry Ford Health System, Novi, MI, USA.
4 Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA.
5 Intramural Program, National Institute on Minority Health and Health Disparities, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA.