title: Comments on "History of depression and smoking cessation outcome: a meta-analysis".
authors.forename: Lirio
authors.initials: L
authors.lastname: Covey
mesh_terms: D002986:Clinical Trials as Topic; D015986:Confounding Factors, Epidemiologic; D003863:Depression / Q000150:complications*; D006801:Humans; D015201:Meta-Analysis as Topic; D012107:Research Design; D012307:Risk Factors; D012907:Smoking / Q000523:psychology*; D016540:Smoking Cessation / Q000523:psychology*