| Literature DB >> 5492703 |
J J Betts, J T Nicholson, E M Critchley.
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Year: 1970 PMID: 5492703 PMCID: PMC2467113 DOI: 10.1136/pgmj.46.542.702
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401