Determinants and outcomes of physical activity in patients with COPD: a systematic review
Elena Gimeno-Santos, Anja Frei, Claudia Steurer-Stey, Jordi de Batlle, Roberto A Rabinovich, Yogini Raste, Nicholas S Hopkinson, Michael I Polkey, Hans van Remoortel, Thierry Troosters, Karoly Kulich, Niklas Karlsson, Milo A Puhan, Judith Garcia-Aymerich, on behalf of PROactive consortium
Thorax Aug 2014, 69 (8) 731-739; DOI: 10.1136/thoraxjnl-2013-204763