2 Department of Dermatology, Alpert Medical School of Brown University, Providence, Rhode Island.
3 Department of Dermatology, Medical School of Jundiaí, São Paulo, Brazil.
4 GK Dermatology, PC, South Weymouth, Massachusetts.
5 Department of Dermatology and Allergology, Städtisches Klinikum Dresden, Academic Teaching Hospital of the Technical University of Dresden, Dresden, Germany.
6 University of Studies Guglielmo Marconi, Rome, Italy.
7 Mansoura Dermatology, Venerology and Leprology Hospital, Mansoura, Egypt.
8 University of Rome G. Marconi, Rome, Italy.
9 Department of Dermatology, University Medical Center Mainz, Mainz, Germany.
10 Department of Dermatology, University Hospital Basel, Basel, Switzerland.