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Ages Eligible for Study:
Child, Adult, Senior
Sexes Eligible for Study:
Patients with potential allergic bronchopulmonary aspergillosis i.e. with peripheral blood eosinophilia, sputum eosinophilia, or any sputum production and bronchiectasis
A history of smoking
Significant occupational or environmental exposures
Evidence on emphysema on chest high resolution computed tomography (HRCT) scan