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PURPOSE Noninvasive tests for the evaluation of chronic venous insufficiency (CVI) include quantitative photoplethysmography (QPG), air plethysmography, and duplex ultrasonography measurement of(More)
To assess the role of noninvasive tests--quantitative photoplethysmography, air plethysmography, and quantitative duplex scanning, we compared a group of normal (group N, eight limbs) volunteers to(More)
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