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50. Comparison of models of maternal age-specific risk for Down syndrome live births. Morris JK, Wald NJ, Mutton DE, Alberman E. Prenat Diagn; 2003 Mar; 23(3):252-8. PubMed ID: 12627430 [Abstract] [Full Text] [Related]
52. [Incidence of Down syndrome and prenatal diagnosis during the years 1984-88 in Finland]. Salonen R, Simola KO, Harjulehto-Mervaala T, Aro T, Saxén L. Duodecim; 1993 Mar; 109(8):681-6. PubMed ID: 8062742 [No Abstract] [Full Text] [Related]
58. Down's syndrome in the Lothian region of Scotland--1978 to 1989. Ramsay CN, Ellis PM, Zealley H. Biomed Pharmacother; 1991 Aug 14; 45(6):267-72. PubMed ID: 1832978 [Abstract] [Full Text] [Related]