| Literature DB >> 276285 |
R Hoffman, S Estren, S Kopel, S M Marks, R P McCaffrey.
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Year: 1978 PMID: 276285 DOI: 10.7326/0003-4819-89-1-71
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391