Effectiveness of inhaled corticosteroids in chronic obstructive pulmonary disease: immortal time bias in observational studies
(Q52949846)
scientific article published on 27 March 2003
scientific article published on 27 March 2003
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Effectiveness of inhaled corticosteroids in chronic obstructive pulmonary disease: immortal time bias in observational studies
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description | scientific article published on 27 March 2003 |
External Links
(P356) |
10.1164/RCCM.200210-1231OC
|
(P698) |
12663327
|