| Literature DB >> 2293820 |
S Smith1, L Anthony, L J Roberts, J A Oates, T Pincus.
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Year: 1990 PMID: 2293820 DOI: 10.7326/0003-4819-112-1-66
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391