American Journal of Respiratory and Critical Care Medicine · 2010 · 32 citations · 26 references
The mechanical and clinical performances of current oxygen conservers are highly variable and in some instances actually contribute to limitations in exercise ability. Seemingly equivalent technical features do not guarantee equivalent therapeutic functionality.
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Martin R. Miller, J. Hankinson, Vito Brusasco et al. · European Respiratory Journal · 2005 · 15.4K citations · Full text
American Journal of Respiratory and Critical Care Medicine · 2002 · 10.5K citations
Principles of Exercise Testing and Interpretation.
Annals of Internal Medicine · 1987 · 2.4K citations