title: Observational studies of inhaled corticosteroids in chronic obstructive pulmonary disease: misconstrued immortal time bias.
authors.forename: Samy
authors.initials: S
authors.lastname: Suissa
mesh_terms: D000280:Administration, Inhalation; D015982:Bias; D016022:Case-Control Studies; D005938:Glucocorticoids / Q000008:administration & dosage*; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000401:mortality; D015996:Survival Rate; D013997:Time Factors
chemical_list: D005938:Glucocorticoids