| Literature DB >> 5641444 |
D G Oreopoulos, M A Soyannwo, R Sinniah, S S Fenton, J H Bruce, M G McGeown.
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Year: 1968 PMID: 5641444 PMCID: PMC1985491 DOI: 10.1136/bmj.1.5594.749
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447