Fig. 1
From: Association between FEV1/FVC levels and all-cause mortality in the general population
Study flow chart. Abbreviations: NHANES = National Health and Nutrition Examination Survey
Fig. 1 | BMC Pulmonary Medicine
From: Association between FEV1/FVC levels and all-cause mortality in the general population
Study flow chart. Abbreviations: NHANES = National Health and Nutrition Examination Survey