| Literature DB >> 8704543 |
A J Pollard1, A Isaacs, E G Hermione Lyall, N Curtis, K Lee, S Walters, M Levin.
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Year: 1996 PMID: 8704543 PMCID: PMC2351699 DOI: 10.1136/bmj.313.7052.283
Source DB: PubMed Journal: BMJ ISSN: 0959-8138