| Literature DB >> 19706660 |
Elizabeth S Draper, Judith Rankin, Ann Tonks, Patricia Boyd, Diana Wellesley, David Tucker, Judith Budd.
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Year: 2009 PMID: 19706660 DOI: 10.1136/bmj.b3428
Source DB: PubMed Journal: BMJ ISSN: 0959-8138