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Wollmer P, Engström G. Fixed ratio or lower limit of normal as cut-off value for FEV1/VC: Response to the letter by Vaz Fragoso et al. Respir Med. 2015;109(7):929doi: 10.1016/j.rmed.2015.04.013.
Wollmer, P., & Engström, G. (2015). Fixed ratio or lower limit of normal as cut-off value for FEV1/VC: Response to the letter by Vaz Fragoso et al. Respiratory medicine, 109(7), 929. https://doi.org/10.1016/j.rmed.2015.04.013
Wollmer, Per, and Engström, Gunnar. "Fixed ratio or lower limit of normal as cut-off value for FEV1/VC: Response to the letter by Vaz Fragoso et al." Respiratory medicine vol. 109,7 (2015): 929. doi: https://doi.org/10.1016/j.rmed.2015.04.013
Wollmer P, Engström G. Fixed ratio or lower limit of normal as cut-off value for FEV1/VC: Response to the letter by Vaz Fragoso et al. Respir Med. 2015 Jul;109(7):929. doi: 10.1016/j.rmed.2015.04.013. Epub 2015 May 06. PMID: 25983248.
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