| Literature DB >> 4730886 |
G B Hopkins, J V Gostling, I Hill, D J McNab, D P Mullan, R W Scutt, E A Wright.
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Year: 1973 PMID: 4730886 PMCID: PMC1586297 DOI: 10.1136/bmj.3.5873.210
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447