Comment On: Wollmer P, Engström G. Fixed Ratio or Lower Limit of Normal (LLN) as Cut-Off Value for FEV 1 /VC: An Outcome Study. Respiratory Medicine (2013) 107, 1460–1462.
Respiratory Medicine - United Kingdom
doi 10.1016/j.rmed.2013.09.024
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July 1, 2015
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Elsevier BV