Correction to: BMC Pulm Med (2021) 21:86 https://doi.org/10.1186/s12890-021-01423-8

Following publication of the article [1], it came to the authors’ attention that incorrect R values had been provided for Fig. 4a, b.

Fig. 4
figure 4

Correlation between the expression of IL-33 in lung tissue and amount of smoking (a). Correlation between IL-33 and FEV1 (%) (b). Abbreviations: R, Pearson correlation coefficient; IL, interleukin; FEV1, forced expiratory volume in 1 s

The figure has been updated in the published article and the correct values may be found in this correction article.

The authors thank you for reading and apologize for any inconvenience caused.