Wiyono, W. H., Riyadi, J., Yunus, F., Ratnawati, A. and Prasetyo, S. (2006) “The benefit of pulmonary rehabilitation against quality of life alteration and functional capacity of chronic obstructive pulmonary disease patient assessed using St George’s respiratory questionnaire and 6 minutes walking distance test”, Medical Journal of Indonesia, 15(3), pp. 165–72. doi: 10.13181/mji.v15i3.232.