| Literature DB >> 3122986 |
M Noppen1, B Velkeniers, P Buydens, P Devroey, A Van Steirteghem, L Vanhaelst.
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Year: 1988 PMID: 3122986 PMCID: PMC2544902 DOI: 10.1136/bmj.296.6616.171
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623