fixed ratio

Clinical Relevance of Fixed Ratio vs Lower Limit of Normal of FEV₁/FVC in COPD: Patient-Reported Outcomes From the CanCOLD Cohort
Wouter van Dijk, Wan Tan, Pei Li, Best Guo, Summer Li, Andrea Benedetti, Jean Bourbeau and CanCOLD Study Group

The Annals of Family Medicine January 2015, 13 (1) 41-48; DOI: https://doi.org/10.1370/afm.1714