[A study of airway reactivity and nature of chronic asthmatic bronchitis].


OBJECTIVE To observe the airway reactivity with methacholine provocation and exercise challenge of chronic asthmatic bronchitis and to assess preliminarily the nature of chronic asthmatic bronchitis. METHODS 42 patients with bronchial asthma, 29 with simple chronic bronchitis and 27 with chronic asthmatic bronchitis were selected. The study protocol… (More)


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