title: Misleading meta-analysis.
authors.forename: Julia
authors.initials: J
authors.lastname: Critchley
authors.forename: Belgin
authors.initials: B
authors.lastname: Unal
mesh_terms: D016022:Case-Control Studies; D006801:Humans; D007822:Laryngeal Neoplasms / Q000209:etiology; D008297:Male; D015201:Meta-Analysis as Topic; D009062:Mouth Neoplasms / Q000209:etiology; D010610:Pharyngeal Neoplasms / Q000209:etiology; D014030:Tobacco, Smokeless / Q000009:adverse effects* / Q000145:classification