| Literature DB >> 4996703 |
J E Idänpäan-Heikkilä, G E Fritchie, B T Ho, W M McIsaac.
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Year: 1971 PMID： 4996703 DOI： 10.1016/0002-9378(71)90746-0
Source DB: PubMed Journal: Am J Obstet Gynecol ISSN： 0002-9378 Impact factor: 8.661