| Literature DB >> 4520955 |
E B Silberstein, D C Zellner, B N Shivakumar, L A Burgin.
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Year: 1974 PMID： 4520955 DOI： 10.7326/0003-4819-80-1-110
Source DB: PubMed Journal: Ann Intern Med ISSN： 0003-4819 Impact factor: 25.391