| Literature DB >> 22520762 |
Berna D L Broekhuizen, Alfred P E Sachs, Theo J M Verheij.
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Year: 2012 PMID: 22520762 PMCID: PMC3268466 DOI: 10.3399/bjgp12X625003
Source DB: PubMed Journal: Br J Gen Pract ISSN: 0960-1643 Impact factor: 5.386