| Literature DB >> 5559431 |
R Selden, S Lee, W L Wang, J V Bennett, T C Eickhoff.
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Year: 1971 PMID: 5559431 DOI: 10.7326/0003-4819-74-5-657
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391