1. Department of General Medicine; Claude Bernard Lyon 1 University; 43 Boulevard 11 Novembre, 1918 BP 761 69622 Villeurbanne Cedex France
2. Department of Mathematics; Claude Bernard Lyon 1 University; 43 Boulevard 11 Novembre, 1918 BP 761 69622 Villeurbanne Cedex France
3. Lyon University; Institute Camille Jordan; UMR 5208; Université Jean Monnet; Lyon France
4. Dermatology Department; Centre Hospitalier Lyon-Sud; Hospices Civils de Lyon; 69495 Pierre Bénite Cedex France
5. INSERM U1052; CNRS UMR5286; Lyon Cancer Research Center; Lyon France