1 The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland; Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
3 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
4 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland. Electronic address: agrossb2@jhmi.edu.