title: [Closing volume measured by He bolus technique (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D003011:Closing Volume; D005260:Female; D006371:Helium; D006801:Humans; D008176:Lung Volume Measurements; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D014109:Total Lung Capacity; D014797:Vital Capacity
chemical_list: D006371:Helium