| Literature DB >> 4944157 |
W A Briggs, J P Merrill, T F O'Brien, R E Wilson, A G Birtch, J E Murray.
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Year: 1971 PMID: 4944157 DOI: 10.7326/0003-4819-75-6-887
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391