MODEL RELEASED. Lung function test. Doctor observing an 11 year old boy exhaling into a spirometer at a hospital. The spirometer derives measurements of vital capacity, peak flow rate and forced expiratory volume. Vital capacity is the maximum volume of air that a person can exhale after maximal inhalation. These values can be used to diagnose asthma.

px px dpi = cm x cm = MB
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TOP03219841

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達志影像

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RM

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須由TPG 完整授權

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Y

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