2 Department of Dermatology, University of Connecticut School of Medicine, Farmington, Connecticut, USA; Department of Dermatology, University of Florida College of Medicine, Gainesville, Florida, USA.
3 Division of Dermatology, Southern Illinois University School of Medicine, Springfield, Illinois, USA.
4 Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania, USA.