| Literature DB >> 1003382 |
P Ley, M A Whitworth, C E Skilbeck, R Woodward, R J Pinsent, L A Pike, M E Clarkson, P B Clark.
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Year: 1976 PMID: 1003382 PMCID: PMC2158294
Source DB: PubMed Journal: J R Coll Gen Pract ISSN: 0035-8797