The validity of the single-breath nitrogen determination of residual volume.
D000328:Adult; D000368:Aged; D005260:Female; D006306:Health Surveys; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D008176:Lung Volume Measurements / Q000379:methods*; D008297:Male; D008433:Mathematics; D008875:Middle Aged; D009584:Nitrogen; D012115:Residual Volume; D012119:Respiration
D009584:Nitrogen