Sniff nasal inspiratory pressure versus IC/TLC ratio as predictors of mortality in COPD
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PII: S0954-6111(10)00099-5
doi:10.1016/j.rmed.2010.03.001
© 2010 Published by Elsevier Inc.
PII: S0954-6111(10)00099-5
doi:10.1016/j.rmed.2010.03.001
© 2010 Published by Elsevier Inc.