1 Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery and Miami Itch Center, University of Miami Miller School of Medicine, Miami, FL, USA.
2 Warren Alpert Medical School, Brown University, Providence, RI, USA.
3 Memorial University of Newfoundland Faculty of Medicine, St. Johns, Newfoundland, Canada.
4 University of Florida, College of Medicine, Gainesville, FL, USA.