Protective effect of a bacterial extract against acute exacerbation in patients with chronic bronchitis accompanied by chronic obstructive pulmonary disease.
Year: 2004
Type: article
Study designs: Randomized Controlled Trial, Clinical Trial
Source: PubMed
Language: English
Subfield: Pulmonary and Respiratory Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: closed
OpenAlex ID: W225135287
