| Literature DB >> 13160503 |
Abstract
Entities:
Keywords: BRONCHITIS/etiology and pathogenesis; SMOKING/injurious effects
Mesh:
Year: 1954 PMID: 13160503 PMCID: PMC2085399 DOI: 10.1136/bmj.1.4877.1473-a
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447