Role of the COVID-19 pandemic on the incidence and stage at initial diagnosis of cutaneous melanoma: a retrospective national study from the French Clinical Database of Melanoma Patients (RIC-Mel) - F. Skowron; A. Seigneurin; S. Mouret; A. Khammari; J. Charles; M.-T. Leccia; RIC-Mel Network (EJC Skin Cancer)