Medical News Today: Peak flow meters: A user's guide
A peak flow meter is a small device that measures the amount of breath a person can exhale in one forced breath. This article looks at their uses, benefits, results, and how to use them.
from Featured Health News from Medical News Today https://ift.tt/2Y2ojnW
from Featured Health News from Medical News Today https://ift.tt/2Y2ojnW
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