[On the role of chronic bronchitis in the course and appearance of bronchial asthma].
D001249:Asthma / Q000209:etiology*; D001991:Bronchitis / Q000150:complications*; D002908:Chronic Disease; D006801:Humans
O roli khronicheskogo bronkhita v techenii i vozniknovenii bronkhial'noĭ astmy.