| Literature DB >> 5795642 |
J D Ball, G Berry, W G Clarke, J C Gilson, J Thomas.
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Year: 1969 PMID: 5795642 PMCID: PMC472002 DOI: 10.1136/thx.24.4.399
Source DB: PubMed Journal: Thorax ISSN: 0040-6376 Impact factor: 9.139