title: Depression and smoking.
authors.forename: Kazim
authors.initials: K
authors.lastname: Sheikh
mesh_terms: D000367:Age Factors; D015984:Causality; D003627:Data Interpretation, Statistical; D003866:Depressive Disorder / Q000453:epidemiology*; D006801:Humans; D012907:Smoking / Q000453:epidemiology* / Q000523:psychology