Suissa, S <br/><br/>
Inhaled steroids and mortality in COPD: bias from unaccounted immortal time.  [electronic resource] 

 -  The European respiratory journal  Mar 2004 
 - 391-5 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0903-1936 
<br/><br/><label>Standard No.: </label>10.1183/09031936.04.00062504  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Administration, Inhalation<br/>Aerosols<br/>Aged<br/>Bias<br/>Bronchodilator Agents--administration & dosage<br/>Cohort Studies<br/>Databases, Factual<br/>Female<br/>Glucocorticoids--administration & dosage<br/>Humans<br/>Male<br/>Observation<br/>Proportional Hazards Models<br/>Pulmonary Disease, Chronic Obstructive--drug therapy<br/>Research Design<br/>Time Factors