Variation in respiratory function. Studies on patients and normal subjects.
D000328:Adult; D001741:Black or African American; D000397:Air Pollution; D001249:Asthma / Q000503:physiopathology*; D001991:Bronchitis / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008396:Maryland; D008875:Middle Aged; D010991:Plethysmography; D012129:Respiratory Function Tests; D013147:Spirometry; D014887:Weather; D044465:White People