1 Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery and Miami Itch Ctr, University of Miami Miller School of Medicine, Miami, Florida, USA.
2 Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA.
3 Memorial University of Newfoundland Faculty of Medicine, St. Johns, Newfoundland, Canada.
4 University of Texas Health Science Center San Antonio, San Antonio, Texas, USA.
5 College of Medicine, University of Florida, Gainesville, Florida, USA.