Rinne ST, Liu CF, Feemster LC, Collins BF, Bryson CL, O’Riordan TG, Au DH. Thiazolidinediones are associated with a reduced risk of COPD exacerbations. Int J Chron Obstruct Pulmon Dis. 2015 Aug 10;10:1591-7. doi: 10.2147/COPD.S82643. eCollection 2015.