1 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Md. Electronic address: skwatra1@jhmi.edu.
2 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Md.
3 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Md; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Md; Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Md; Howard Hughes Medical Institute, Chevy Chase, Md.