@article{articlea1c6c55a, title = {Evaluation of health-related quality of life in low-income patients with COPD receiving long-term oxygen therapy}, author = {Ferreira, Cláudia Adriana Sant'Anna and Stelmach, Rafael and Feltrin, Maria Ignez Zanetti and Jacob Filho, Wilson and Chiba, Toshio and Cukier, Alberto}, year = {2003}, journal = {Chest - The Cardiopulmonary and Critical Care Journal} }