title: Symptoms and peak expiratory flow rate: diurnal variation in asthmatic children.
mesh_terms: D001249:Asthma / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D002940:Circadian Rhythm; D005260:Female; D005540:Forced Expiratory Flow Rates; D006801:Humans; D008297:Male; D010366:Peak Expiratory Flow Rate