| Literature DB >> 5549183 |
R Kalappa, K Ueland, J M Hansen, M Eng, J T Parer.
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Year: 1971 PMID: 5549183 DOI: 10.1016/0002-9378(71)90337-1
Source DB: PubMed Journal: Am J Obstet Gynecol ISSN: 0002-9378 Impact factor: 8.661