Explain what is FEV, What is the difference between FEV1 and FEV3 and what are considered normal values? What would be a
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Explain what is FEV, What is the difference between FEV1 and FEV3 and what are considered normal values? What would be a
Explain what is FEV, What is the difference between FEV1 and FEV3 and what are considered normal values? What would be a typical FEV3 for a person with emphysema?