| Literature DB >> 21247958 |
Michael Norbury, Stewart W Mercer, John Gillies, John Furler, Graham C M Watt.
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Year: 2011 PMID: 21247958 DOI: 10.1093/fampra/cmq118
Source DB: PubMed Journal: Fam Pract ISSN: 0263-2136 Impact factor: 2.267