| Literature DB >> 7329881 |
O Khan, P J Ell, K A Maclennan, A Kurtz, E S Williams.
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Year: 1981 PMID: 7329881 PMCID: PMC2424874 DOI: 10.1136/pgmj.57.665.172
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401