| Literature DB >> 12446552 |
Charles E M Normand, David Field, Diana Elbourne, Ann Truesdale.
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Year: 2002 PMID: 12446552 PMCID: PMC1124705 DOI: 10.1136/bmj.325.7374.1244/a
Source DB: PubMed Journal: BMJ ISSN: 0959-8138