%0 Journal Article %A Enrico M. Clini %A Laura Fregonese %T A conceptual framework for reporting experience of physical activity in COPD %D 2014 %R 10.1183/09031936.00147314 %J European Respiratory Journal %P 1110-1112 %V 44 %N 5 %U https://erj.ersjournals.com/content/erj/44/5/1110.full.pdf