title: Literature search methodology for systematic reviews: conventional and natural language processing enabled methods are complementary (Letter commenting on: J Clin Epidemiol. 2015;68:191-9).
authors.affiliation: Center for Medical Biometry and Medical Informatics, University Medical Centre Freiburg, Stefan-Meier-Str. 26, Freiburg, D-79104 Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Boeker
authors.affiliation: Center for Medical Biometry and Medical Informatics, University Medical Centre Freiburg, Stefan-Meier-Str. 26, Freiburg, D-79104 Germany.
authors.forename: Edith
authors.initials: E
authors.lastname: Motschall
authors.affiliation: Center for Medical Biometry and Medical Informatics, University Medical Centre Freiburg, Stefan-Meier-Str. 26, Freiburg, D-79104 Germany. Electronic address: wv@imbi.uni-freiburg.de.
authors.forename: Werner
authors.initials: W
authors.lastname: Vach
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