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APA Citation
Mathur, R. S., Revill, S. M., Vara, D. D., Walton, R., & Morgan, M. D. (1995). comparison of peak oxygen consumption during cycle and treadmill exercise in severe chronic obstructive pulmonary disease.. Thorax, 50(8), 829–833. http://access.bl.uk/ark:/81055/vdc_100135548302.0x000032