| Literature DB >> 9740571 |
J Popoola1, A F Muller, L Pollock, P O'Donnell, P Carmichael, P Stevens.
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Year: 1998 PMID: 9740571 PMCID: PMC1113907 DOI: 10.1136/bmj.317.7161.795
Source DB: PubMed Journal: BMJ ISSN: 0959-8138