| Literature DB >> 19000411 |
Nigel Mathers, Nicola M R Perrin, Graham C M Watt.
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Year: 2008 PMID: 19000411 PMCID: PMC2573987 DOI: 10.3399/bjgp08X342750
Source DB: PubMed Journal: Br J Gen Pract ISSN: 0960-1643 Impact factor: 5.386