Response to a questionnaire on chronic bronchitic symptoms in East Anglia.
D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease / Q000453:epidemiology; D003371:Cough / Q000453:epidemiology; D004739:England; D006801:Humans; D008297:Male; D008875:Middle Aged; D012220:Rhinitis / Q000453:epidemiology