RT Journal Article SR Electronic T1 “Drivers of year-to-year variation in exacerbation frequency of COPD: analysis of the AERIS cohort” Tom M.A. Wilkinson, Emmanuel Aris, Simon C. Bourne, Stuart C. Clarke, Mathieu Peeters, Thierry G. Pascal, Laura Taddei, Andrew C. Tuck, Viktoriya L. Kim, Kristoffer K. Ostridge, Karl J. Staples, Nicholas P. Williams, Anthony P. Williams, Stephen A. Wootton and Jeanne-Marie Devaster, on behalf of the AERIS Study Group. ERJ Open Res 2019; 5: 00248-2018. JF ERJ Open Research JO erjor FD European Respiratory Society SP 00248-2018-AUT DO 10.1183/23120541.50248-2018 VO 5 IS 3 YR 2019 UL http://openres.ersjournals.com/content/5/3/00248-2018-AUT.abstract AB