Are six seconds long enough?
- PMID: 16973417
- PMCID: PMC6730824
- DOI: 10.1016/j.pcrj.2006.07.004
Are six seconds long enough?
Comment on
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The FEV1/FEV6 ratio is a good substitute for the FEV1/FVC ratio in the elderly.Prim Care Respir J. 2006 Oct;15(5):294-8. doi: 10.1016/j.pcrj.2006.07.002. Epub 2006 Sep 15. Prim Care Respir J. 2006. PMID: 16979378 Free PMC article.