Original Research

Accelerometer- versus questionnaire-based assessment of physical activity and their changes over time in patients with COPD

Sievi NA, Brack T, Brutsche MH, Frey M, Irani S, Leuppi JD, Thurnheer R, Kohler M, Clarenbach CF

International Journal of Chronic Obstructive Pulmonary Disease 2017, 12:1113-1118

Published Date: 10 April 2017