| Literature DB >> 5580937 |
A R Walker, B F Walker, B D Richardson.
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Year: 1971 PMID: 5580937 PMCID: PMC2466922 DOI: 10.1136/pgmj.47.548.320
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401