| Literature DB >> 4330676 |
M J Tong, S C Sun, B T Schaeffer, N K Chang, K J Lo, R L Peters.
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Year: 1971 PMID: 4330676 DOI: 10.7326/0003-4819-75-5-687
Source DB: PubMed Journal: Ann Intern Med ISSN: 0003-4819 Impact factor: 25.391