title: Response to letter by Boeker et al. Development of search strategies for systematic reviews: further issues regarding the objective and conceptual approaches.
authors.affiliation: Information Management Unit, Institute for Quality and Efficiency in Health Care (IQWiG), Im Mediapark 8, D-50670 Köln, Germany. Electronic address: elke.hausner@iqwig.de.
authors.forename: Elke
authors.initials: E
authors.lastname: Hausner
authors.affiliation: Information Management Unit, Institute for Quality and Efficiency in Health Care (IQWiG), Im Mediapark 8, D-50670 Köln, Germany.
authors.forename: Siw
authors.initials: S
authors.lastname: Waffenschmidt
mesh_terms: D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods* / Q000592:standards*; D011643:Publishing / Q000592:standards*; D012196:Review Literature as Topic; D057386:Search Engine / Q000592:standards*; D054928:Validation Studies as Topic