| Literature DB >> 3882145 |
R W Smithells, S Sheppard, J Wild, C J Schorah, D W Fielding, M J Seller, N C Nevin, R Harris, A P Read, S Walker.
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Year: 1985 PMID: 3882145 DOI: 10.1111/j.1471-0528.1985.tb01075.x
Source DB: PubMed Journal: Br J Obstet Gynaecol ISSN: 0306-5456