"Take a deep breath".
D000208:Acute Disease; D000328:Adult; D002245:Carbon Dioxide / Q000378:metabolism; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010313:Partial Pressure; D012119:Respiration
D002245:Carbon Dioxide