Retraction

The article, "miR-31 is a negative regulator of pulmonary fibrosis," by Shanzhong Yang, Na Xie, Huachun Cui, Sami Banerjee, Edward Abraham, Victor J. Thannickal, and Gang Liu (FASEB J. 2012 Sep;26(9):3790-9. doi: 10.1096/fj.11-202366), has been retracted at the corresponding author's request because it contained previously published data. All versions of the article have been removed from the journal's web site and the authors regret any inconvenience caused by the retraction.