| Literature DB >> 5765809 |
M I Blackhall, G A Buckley, D V Roberts, J B Roberts, B H Thomas, A Wilson.
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Year: 1969 PMID: 5765809 DOI: 10.1111/j.1471-0528.1969.tb05812.x
Source DB: PubMed Journal: J Obstet Gynaecol Br Commonw ISSN: 0022-3204