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Obstetrics and Gynecology|August 1, 1995
Fetal karyotyping for chromosome abnormalities after an unexplained elevated maternal serum alpha-fetoprotein screeningL B Feuchtbaum, G Cunningham, D K Waller, et al.
American Journal of Human Genetics|November 1, 1983
Decreased HLA heterogeneity in parents of children with Down syndromeV D Mottironi, E B Hook, A M Willey, et al.
American Journal of Human Genetics|January 1, 1981
Paternal age and Down syndrome in British ColumbiaE B Hook, P K Cross, S H Lamson, et al.
Genetic Epidemiology|January 1, 1985
False-positive reporting of Down syndrome on Ohio and New York birth certificatesK M Johnson, C A Huether, E B Hook, et al.
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