1 Dermatology Clinic, Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome.
2 Dermatology Unit, Department of Medicine, "Celio" Military Hospital, Rome, Italy.
3 Department of Dermatology, Oregon Health and Sciences University, Portland, Oregon.
4 School of Medicine, University of California Riverside, Riverside, California.
5 Department of Pathology, Veterans Affairs Portland Health Care System, Oregon Health & Science University, United States Veterans Hospital, Portland, Oregon.
6 Department of Dermatology, University of Modena and Reggio Emilia, Modena, Italy.
7 Department of Telemedicine and Bioinformatics, Jagiellonian University Medical College, Krakow, Poland.