1 Department of Dermatology, University Hospital of Nice, Archet 2 Hospital, Nice, France. Electronic address: alexandra.picard06@orange.fr.
2 Department of Dermatology, University Hospital of Nice, Archet 2 Hospital, Nice, France.
3 Department of Pathology, University Hospital of Nice, Pasteur Hospital, Nice, France.
4 Department of Dermatology, University Hospital of Nice, Archet 2 Hospital, Nice, France; Clinical Research Centre, University Hospital of Nice, Nice, France.