| Literature DB >> 4197371 |
L H McConnell, J N Fink, D P Schlueter, M G Schmidt.
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Year: 1973 PMID: 4197371 DOI: 10.7326/0003-4819-78-6-888
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391