Assessing Treatment Success or Failure as an Outcome in Randomised Clinical Trials of COPD Exacerbations. A Meta-Epidemiological Study oleh Alexander G. Mathioudakis, Sachin Ananth, Thomas Bradbury, Balazs Csoma, Pradeesh Sivapalan, Elizabeth Stovold, Gustavo Fernandez-Romero, Zsofia Lazar, Gerard J. Criner, Christine Jenkins, Alberto Papi, Jens-Ulrik Jensen, Jørgen Vestbo, on behalf of the DECODE-NET