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APA Citation
Engström, C. P., Persson, L. O., Larsson, S., Rydén, A., & Sullivan, M. (1996). functional status and well being in chronic obstructive pulmonary disease with regard to clinical parameters and smoking: a descriptive and comparative study.. Thorax, 51(8), 825–830. http://access.bl.uk/ark:/81055/vdc_100135545034.0x000029