Peak flow meter. Man using a peak flow meter (spirometer) to measure his respiratory output, and therefore the strength of his lungs, while wearing a

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Peak flow meter. Man using a peak flow meter (spirometer) to measure his respiratory output, and therefore the strength of his lungs, while wearing a nose clip.

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Size: 5124px × 3410px
Photo credit: © DR P. MARAZZI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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