| Literature DB >> 14229709 |
Abstract
Entities:
Keywords: BRONCHITIS; DIAGNOSIS; EPIDEMIOLOGY; SPECIMEN HANDLING; SPUTUM; STATISTICS
Mesh:
Year: 1965 PMID: 14229709 PMCID: PMC2165318 DOI: 10.1136/bmj.1.5430.288
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447