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The Cochrane Database of Systematic Reviews|April 20, 2007
Oxygen therapy during exercise training in chronic obstructive pulmonary diseaseM L Nonoyama, D Brooks, Y Lacasse, et al.
American Journal of Respiratory and Critical Care Medicine|April 3, 2001
Development and testing of formal protocols for oxygen prescribingG H Guyatt, D A McKim, B Weaver, et al.
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