| Literature DB >> 8290443 |
S Gupta, M el-Omar, I Sutherland, R Clarke, A Gorsuch, P Wright.
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Year: 1993 PMID: 8290443 PMCID: PMC2399933 DOI: 10.1136/pgmj.69.817.894
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401