title: Reply to: Validation of database search strategies for the epidemiological study of pemphigus and pemphigoid.
authors.affiliation: Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, U.K. sinead.langan@lshtm.ac.uk.
authors.forename: S M
authors.initials: SM
authors.lastname: Langan
authors.affiliation: Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, U.K.
authors.forename: L
authors.initials: L
authors.lastname: Smeeth
authors.affiliation: Department of Epidemiology, University of Nottingham, Nottingham, U.K.
authors.forename: J
authors.initials: J
authors.lastname: West
mesh_terms: D016208:Databases, Factual; D016021:Epidemiologic Studies; D006801:Humans; D010391:Pemphigoid, Bullous; D010392:Pemphigus