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Malt, EA; Dahl, RC; Haugsand, TM; Ulvestad, IH; Emilsen, NM; Hansen, B; Cardenas, YE; Skøld, RO; Thorsen, AT; Davidsen, EM (5. 2. 2013). „Health and disease in adults with Down syndrome”. Tidsskrift for den Norske Laegeforening : Tidsskrift for Praktisk Medicin, NY Raekke. 133 (3): 290—94. PMID23381164. doi:10.4045/tidsskr.12.0390.
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Morain, Stephanie; Greene, Michael F.; Mello, Michelle M. (2013). „A New Era in Noninvasive Prenatal Testing”. New England Journal of Medicine. 369 (6): 499—501. PMID23862975. doi:10.1056/NEJMp1304843.
Morris, JK; Mutton, DE; Alberman, E (2002). „Revised estimates of the maternal age specific live birth prevalence of Down's syndrome”. Journal of Medical Screening. 9 (1): 2—6. PMID11943789. doi:10.1136/jms.9.1.2.
Malt, EA; Dahl, RC; Haugsand, TM; Ulvestad, IH; Emilsen, NM; Hansen, B; Cardenas, YE; Skøld, RO; Thorsen, AT; Davidsen, EM (5. 2. 2013). „Health and disease in adults with Down syndrome”. Tidsskrift for den Norske Laegeforening : Tidsskrift for Praktisk Medicin, NY Raekke. 133 (3): 290—94. PMID23381164. doi:10.4045/tidsskr.12.0390.
Hickey, F; Hickey, E; Summar, KL (2012). „Medical update for children with Down syndrome for the pediatrician and family practitioner.”. Advances in Pediatrics. 59 (1): 137—57. PMID22789577. doi:10.1016/j.yapd.2012.04.006.
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Morain, Stephanie; Greene, Michael F.; Mello, Michelle M. (2013). „A New Era in Noninvasive Prenatal Testing”. New England Journal of Medicine. 369 (6): 499—501. PMID23862975. doi:10.1056/NEJMp1304843.