title: Long-term treatment for severe psoriasis: we're halfway there, with a long way to go.
authors: Joel M
authors: JM
authors: Gelfand
mesh_terms: D006801:Humans; D011701:PUVA Therapy / Q000009:adverse effects; D011565:Psoriasis / Q000188:drug therapy* / Q000473:pathology; D016896:Treatment Outcome