title: The volume of trapped gas in healthy children aged 7--16.
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008168:Lung / Q000502:physiology*; D008176:Lung Volume Measurements; D008297:Male; D008433:Mathematics; D012129:Respiratory Function Tests; D013147:Spirometry