Correction to: BMC Pulmonary Medicine (2018) 18:41 https://doi.org/10.1186/s12890-018-0604-x
Following publication of the original article , it was brought to the authors’ attention that representative histological images in Fig. 3D had been erroneously duplicated from two other articles [2, 3].
The figure has been corrected in the published article and the correct figure is shown in this correction. This correction does not affect the results or conclusion of the article.
The authors apologize for any inconvenience caused.