title: Methotrexate toxicity causing pseudomembraneous laryngotracheitis.
authors.affiliation: Department of Internal Medicine, St. Franciscus Hospital, Rotterdam, The Netherlands; Department of Rheumatology, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: E J A
authors.initials: EJ
authors.lastname: Kroot
authors.forename: F H
authors.initials: FH
authors.lastname: van Nederveen
authors.forename: P G J
authors.initials: PG
authors.lastname: Ten Koppel