... ,ERS standards of the American Thoracic Society(ATS)Adopting pressure-flow sensor, sensitive, precise, easy to launder, clean and druableAll ... all English operation, more convenient to operate110mm themal printer built-in, can print out a clear clinical report, predicted value, ... FVC measuring time 25 secongs, MVV time 12 seconds. in favor of the coordination between patients and the devicecompact and ...
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