1 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Creighton University School of Medicine, Omaha, Nebraska.
3 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland. Electronic address: skwatra1@jhmi.edu.