| Literature DB >> 7312739 |
P W Keeling, J Bull, P Kingston, R P Thompson.
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Year: 1981 PMID: 7312739 PMCID: PMC2424960 DOI: 10.1136/pgmj.57.669.433
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401