| Literature DB >> 7905285 |
C H van der Vaart1, M P Heringa, R P Dullaart, J G Aarnoudse.
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Year: 1993 PMID: 7905285 DOI: 10.1111/j.1471-0528.1993.tb15185.x
Source DB: PubMed Journal: Br J Obstet Gynaecol ISSN: 0306-5456