title: A systematic review of five systemic treatments for severe psoriasis: reply
authors.affiliation: Departments of Dermatology and Biostatistics and Epidemiology, University of Amsterdam, Academical Medical Centre, PO Box 22770, 1100 DE Amsterdam, The Netherlands.
authors.initials: PI
authors.lastname: Spuls
authors.initials: L
authors.lastname: Whitkamp
authors.initials: PM
authors.lastname: Bossuyt
authors.initials: JD
authors.lastname: Bos