Analysis of information sources in references of the Wikipedia article "Bronchitis" in English language version.
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with CB by symptoms (18.9%), approximately 60% had COPD (i.e., had also airflow obstruction on spirometry)
Chronic bronchitis becomes chronic obstructive bronchitis if spirometric evidence of airflow obstruction develops.
Chronic bronchitis ... is very often secondary to chronic obstructive pulmonary disease (COPD).
with CB by symptoms (18.9%), approximately 60% had COPD (i.e., had also airflow obstruction on spirometry)
Chronic bronchitis ... is very often secondary to chronic obstructive pulmonary disease (COPD).
with CB by symptoms (18.9%), approximately 60% had COPD (i.e., had also airflow obstruction on spirometry)
The more familiar terms "chronic bronchitis" and "emphysema" have often been used as labels for the condition.
The more familiar terms 'chronic bronchitis' and 'emphysema' are no longer used, but are now included within the COPD diagnosis.