Changes in physical activity and all-cause mortality in COPD

@article{Vaes2014ChangesIP,
  title={Changes in physical activity and all-cause mortality in COPD},
  author={Anouk W. Vaes and Judith Garcia-Aymerich and Jacob Louis Marott and Marta Benet and Miriam T. J. Groenen and Peter Schnohr and Frits M.E. Franssen and J{\o}rgen Vestbo and Emiel F. M. Wouters and Peter Lange and Martijn A. Spruit},
  journal={European Respiratory Journal},
  year={2014},
  volume={44},
  pages={1199 - 1209}
}
Little is known about changes in physical activity in subjects with chronic obstructive pulmonary disease (COPD) and its impact on mortality. Therefore, we aimed to study changes in physical activity in subjects with and without COPD and the impact of physical activity on mortality risk. Subjects from the Copenhagen City Heart Study with at least two consecutive examinations were selected. Each examination included a self-administered questionnaire and clinical examination. 1270 COPD subjects… 

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