title: Meta-analysis:  the importance of a proper search strategy.
authors.forename: Yi
authors.initials: Y
authors.lastname: Lu
authors.forename: Hong
authors.initials: H
authors.lastname: Jiang
mesh_terms: D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation* / Q000379:methods*; D020704:Laryngoscopes; D007828:Laryngoscopy / Q000295:instrumentation* / Q000379:methods*; D008297:Male; D016032:Randomized Controlled Trials as Topic; D014741:Video Recording