| Literature DB >> 5284907 |
J S Hart, J M Trujillo, E J Freireich, S L George, E Frei.
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Year: 1971 PMID: 5284907 DOI: 10.7326/0003-4819-75-3-353
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391