| Literature DB >> 5360313 |
R E Gerhardt, R F Knouss, P T Thyrum, R J Luchi, J J Morris.
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Year: 1969 PMID: 5360313 DOI: 10.7326/0003-4819-71-5-927
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391