basing on the findings gained at investigation of external respiration with measurement of the forced expiration rate in a large group of chronic bronchitis sufferers , subjects exposed to occupational respiratory irritants and in healthy subjects , the conclusion was made on a high informative content in relation to chronic bronchitis diagnosis of a maximal expiration rate at the level of 75 % expiratory vital capacity , especially in combination with tiffeneau test .
C0035203
respiration
C0231800
expiration