[N2 washout--single and multiple breath method (author's transl)].
D000328:Adult; D000375:Aging; D003011:Closing Volume; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D008297:Male; D009584:Nitrogen; D012129:Respiratory Function Tests / Q000379:methods*; D012907:Smoking / Q000503:physiopathology
D009584:Nitrogen