TY - JOUR T1 - “Can health status questionnaires be used as a measure of physical activity in COPD patients?” Heleen Demeyer, Ivan Dueñas-Espín, Corina De Jong, Zafeiris Louvaris, Miek Hornikx, Elena Gimeno-Santos, Matthias Loeckx, Ioannis Vogiatzis, Wim Janssens, Nicholas S. Hopkinson, Roberto A. Rabinovich, Niklas Karlsson, Judith Garcia-Aymerich and Thierry Troosters, on behalf of the PROactive consortium. <em>Eur Respir J</em> 2016; 47: 1565–1568. JF - European Respiratory Journal JO - Eur Respir J DO - 10.1183/13993003.51815-2015 VL - 49 IS - 2 SP - 1551815 A2 - , Y1 - 2017/02/01 UR - http://erj.ersjournals.com/content/49/2/1551815.abstract N2 - This article from the March 2015 issue of … ER -