P H Roessingh

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OBJECTIVE To determine the prevalence of viruses and atypical pathogens as causes of acute severe exacerbations of chronic bronchitis. DESIGN Retrospective. SETTING University Hospital Utrecht, the Netherlands. METHODS In 4 studies with 305 patients with severe type-1 exacerbations (increase of dyspnoea, of sputum volume and of sputum purulence)(More)
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