| Literature DB >> 4571864 |
F R Singer, D Powell, C Minkin, J E Bethune, A Brickman, J W Coburn.
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Year: 1973 PMID: 4571864 DOI: 10.7326/0003-4819-78-3-365
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391