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Flow chart of the data collection.
Notes: In total, 218 respiratory medicine physicians agreed to collect and provide data (134 private respiratory medicine practitioners and 84 hospital doctors). At the end of the study, data were provided from 199 respiratory medicine physicians (124 private practitioners and 75 hospital doctors; response rate 92.5% and 89.3%, respectively).
Abbreviation: GOLDEN study, Greek Obstructive Lung Disease Epidemiology and health ecoNomics study.
