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The distributions of ventilation, lung volumes and perfusion were studied in 56 healthy non-smoking Finnish adults to get reference values for a computerized 133-Xe radiospirometer with 16 detectors and moveable designed collimators (Valmet BI 1200). The age of the subjects ranged from 20 to 60 (mean 36.5, SD 9.1) years. Thirty-one of them were men. In(More)
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