title: Pitfalls of meta-analyses.
authors.forename: Stefan G
authors.initials: SG
authors.lastname: Hofmann
authors.forename: Jasper A J
authors.initials: JA
authors.lastname: Smits
mesh_terms: D001008:Anxiety Disorders / Q000628:therapy*; D015928:Cognitive Behavioral Therapy; D003887:Desensitization, Psychologic; D006801:Humans; D015201:Meta-Analysis as Topic; D012064:Relaxation Therapy; D012106:Research; D016896:Treatment Outcome