title: A systematic review of five systemic treatments for severe psoriasis.
authors.forename: H C
authors.initials: HC
authors.lastname: Williams
authors.forename: A L
authors.initials: AL
authors.lastname: Po
authors.forename: D
authors.initials: D
authors.lastname: Murrel
authors.forename: L
authors.initials: L
authors.lastname: Naldi
authors.forename: T
authors.initials: T
authors.lastname: Diepgen
mesh_terms: D006801:Humans; D011565:Psoriasis / Q000188:drug therapy*; D012196:Review Literature as Topic