1 Section of Dermatology, Department of Health Sciences, University of Florence, Florence, Italy.
2 Section of Dermatology, Unit of Rare Diseases, Department of Health Sciences, USL Toscana Centro, University of Florence, Florence, Italy.
3 Unit of Pathological Anatomy, Department of Health Sciences, University of Florence Medical School, Florence, Italy.
4 Molecular and Cell Biology Laboratory, IDI-IRCCS, Rome, Italy.
5 Section of Dermatology, Unit of Rare Diseases, Department of Health Sciences, USL Toscana Centro, University of Florence, Florence, Italy - marzia.caproni@unifi.it.