title: Pulmonary function studies with simple equipment in 323 normal children.
mesh_terms: D000293:Adolescent; D000531:Altitude; D001274:Atmospheric Pressure; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D012123:Pulmonary Ventilation / Q000295:instrumentation; D012129:Respiratory Function Tests / Q000295:instrumentation / Q000592:standards*; D013147:Spirometry / Q000295:instrumentation