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Donovan CM, Brooks GA.Donovan CM, et al. Among authors: brooks ga.J Appl Physiol Respir Environ Exerc Physiol. 1977 Sep;43(3):431-9. doi: 10.1152/jappl.1977.43.3.431.J Appl Physiol Respir Environ Exerc Physiol. 1977.PMID: 914714