| Literature DB >> 1809269 |
D R Williams, P M Clark, N E Day, T Wang, C Byrne, L Cox, C N Hales.
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Year: 1991 PMID: 1809269 PMCID: PMC1671307 DOI: 10.1136/bmj.303.6810.1134
Source DB: PubMed Journal: BMJ ISSN: 0959-8138