| Literature DB >> 6700657 |
R Romero, T P Duffy, R L Berkowitz, E Chang, J C Hobbins.
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Year: 1984 PMID: 6700657 DOI: 10.1056/NEJM198403223101207
Source DB: PubMed Journal: N Engl J Med ISSN: 0028-4793 Impact factor: 91.245