title: How much did biases in the study of chronic obstructive pulmonary disease medications and mortality affect the outcome?
authors.forename: Samy
authors.initials: S
authors.lastname: Suissa
authors.forename: Pierre
authors.initials: P
authors.lastname: Ernst
mesh_terms: D000305:Adrenal Cortex Hormones / Q000009:adverse effects*; D015982:Bias; D001993:Bronchodilator Agents / Q000009:adverse effects*; D002318:Cardiovascular Diseases / Q000401:mortality*; D003627:Data Interpretation, Statistical; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000401:mortality*; D013997:Time Factors
chemical_list: D000305:Adrenal Cortex Hormones; D001993:Bronchodilator Agents