After publication, concerns have been raised by a third party regarding Figure 3 on page 540 of the published article.Due to an error that occurred inadvertently at the time of figure assembly there is a duplicate image panel in Figure 3A which is intended to depict the general trend of airway remodeling across different COPD severities.The incorrect image representative of SAD 5th has now been replaced with the correct image.This correction does not affect the results or conclusions of the article.The authors apologize for this oversight and appreciate the opportunity to correct the error.The correct Figure 3 is shown below.
Qin et al. (Sun,) studied this question.