title: Keratoses and nonmelanoma skin tumors in long-term photochemotherapy (PUVA).
mesh_terms: D000328:Adult; D000367:Age Factors; D006801:Humans; D007642:Keratosis / Q000139:chemically induced* / Q000453:epidemiology; D008875:Middle Aged; D011701:PUVA Therapy / Q000009:adverse effects*; D010778:Photochemotherapy / Q000009:adverse effects*; D011565:Psoriasis / Q000188:drug therapy; D012306:Risk; D012737:Sex Factors; D012878:Skin Neoplasms / Q000139:chemically induced* / Q000453:epidemiology