| Literature DB >> 3813244 |
A L George, B P Folk, P L Crecelius, W B Campbell.
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Year: 1987 PMID: 3813244 DOI: 10.7326/0003-4819-106-3-472_2
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391