An epidemic of overbreathing among schoolgirls.
D000293:Adolescent; D004196:Disease Outbreaks; D004739:England; D005260:Female; D006801:Humans; D006985:Hyperventilation / Q000453:epidemiology*; D007046:Hysteria; D010555:Personality Inventory; D011581:Psychological Tests; D013575:Syncope; D013746:Tetany