| Literature DB >> 5572526 |
J D Parkes, R P Knill-Jones, P J Clements.
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Year: 1971 PMID: 5572526 PMCID: PMC2467156 DOI: 10.1136/pgmj.47.544.116
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401