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Total lung capacity (TLC) plot. plotted values of differences between TLC (in ml) measured with plethysmography and CT (ΔTLC) and given as percent deviation (100% * (plethysmography - CT)/Plethysmography). Black line represents standard deviation when available. Each colour represents a patient group. Blue: mixed. Red: restrictive. Green: healthy. Black: obstructive. [1,7–17,20–24].
