1 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA.
2 Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
3 Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
4 Department of Chemical and Biomolecular Engineering, Johns Hopkins University Whiting School of Engineering, Baltimore, Maryland, USA.
5 Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Department of CheBE, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
6 Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA; Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina, USA.
7 Department of Dermatology, University of Maryland School of Medicine, Baltimore, Maryland, USA; Maryland Itch Center, University of Maryland School of Medicine, Baltimore, Maryland, USA. Electronic address: kwatra.shawn@gmail.com.