| Literature DB >> 1967482 |
G Steventon, C Humfrey, S Sturman, R H Waring, A C Williams.
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Year: 1990 PMID: 1967482 DOI: 10.1016/0140-6736(90)90063-b
Source DB: PubMed Journal: Lancet ISSN: 0140-6736 Impact factor: 79.321