Chronic Obstructive Pulmonary Disease
... not include Confounding Asthma drugs prior Only in sensitivity analysis, exclusion ICD-9 code 493 variable ICD-9 code 493 variable 5-year excluding all with an ICD-9 criteria code for asthma (493.x) in the previous year Drug exposure Oneanbsp;...
| Title | : | Chronic Obstructive Pulmonary Disease |
| Author | : | Robert A. Stockley, Stephen I Rennard, Klaus Rabe, Bartolome Celli |
| Publisher | : | John Wiley & Sons - 2008-04-15 |
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