1 Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia; Emory University School of Medicine, Emory University, Atlanta, Georgia.
2 Department of Dermatology, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
3 Morehouse School of Medicine, Atlanta, Georgia.
4 Emory University School of Medicine, Emory University, Atlanta, Georgia.
5 Emory University School of Medicine, Emory University, Atlanta, Georgia; Department of Dermatology, Emory University, Atlanta, Georgia; Division of Dermatology, Atlanta VA Medical Center, Atlanta, Georgia. Electronic address: schen2@emory.edu.