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 Faculty of Medicine, Memorial University of Newfoundland, St. Johns, Canada.
4 College of Medicine, University of Florida, Gainesville, Florida, USA.