How evidence-based is ED management of exacerbation of COPD?
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PII: S1574-6267(09)00132-3
doi:10.1016/j.aenj.2009.08.009
© 2009 Published by Elsevier Inc.
PII: S1574-6267(09)00132-3
doi:10.1016/j.aenj.2009.08.009
© 2009 Published by Elsevier Inc.