| Literature DB >> 10136844 |
N Freemantle1, C Pollock, T A Sheldon, J M Mason, F Song, A F Long, S Ibbotson.
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Year: 1992 PMID: 10136844 PMCID: PMC1054979 DOI: 10.1136/qshc.1.2.134
Source DB: PubMed Journal: Qual Health Care ISSN: 0963-8172