NITROSAMINES IN METFORMIN AND HYDROCHLOROTHIAZIDE: ʺHUMAN SAFE PHOTOCARCINOGENSʺ WITHIN THE POLYPHARMACY AS GENERATOR FOR PHOTOTOXICITY/ PHOTOCARCINOGENICITY AND THE SUBSEQUENT DEVELOPMENT OF MULTIPLE KERATINOCYTE CARCINOMAS. DOUBLE HATCHET FLAP AS OPTIMAL AND NECESSARY DERMATOSURGICAL DECISION IN TWO NEW PATIENTS