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4. Twinning and Down syndrome. Doyle P Ir Med J; 1992 Dec; 85(4):121. PubMed ID: 1473938 [No Abstract] [Full Text] [Related]
5. [Down's syndrome in twins (according to the study of 15 pairs)]. Badalian LO; Lipovetskaia NG; Oradovskaia IV Pediatriia; 1974 Mar; 3():46-55. PubMed ID: 4275143 [No Abstract] [Full Text] [Related]
9. [A rare karyotype [46xy, -21, +t (21q; 21q)] of Down's syndrome in an OSDZ twin]. Fang HT Zhonghua Shen Jing Jing Shen Ke Za Zhi; 1986 Jun; 19(3):182-4. PubMed ID: 2944726 [No Abstract] [Full Text] [Related]
10. Observations on mosaic parents of mongol propositi. Richards BW J Ment Defic Res; 1970 Dec; 14(4):342-6. PubMed ID: 4283611 [No Abstract] [Full Text] [Related]
11. Multiple pregnancy. 2. Benirschke K; Kim CK N Engl J Med; 1973 Jun; 288(25):1329-36. PubMed ID: 4267537 [No Abstract] [Full Text] [Related]
12. A further note on mongolism in twins. SMITH A Br J Prev Soc Med; 1960 Jan; 14(1):47-8. PubMed ID: 13831859 [No Abstract] [Full Text] [Related]
13. [Down's syndrome from the point of view of medical genetics and the child- and adolescent health care]. Wittwer BB; Lischka E Arztl Jugendkd; 1975 Jan; 66(1):89-100. PubMed ID: 123695 [No Abstract] [Full Text] [Related]
14. Mongolism in both of twins of opposite sex. NICHOLSON DN; KEAY AJ Arch Dis Child; 1957 Aug; 32(164):325-7. PubMed ID: 13459461 [No Abstract] [Full Text] [Related]
15. Monozygotic twins discordant for trisomy 21 or chimeric dizygotic twins? Gilgenkrantz S; Janot C Am J Med Genet; 1983 May; 15(1):159-60. PubMed ID: 6222653 [No Abstract] [Full Text] [Related]
16. The significance of twins in mongolism in the light of new evidence. KEAY AJ J Ment Defic Res; 1958 Jun; 2(1):1-7. PubMed ID: 13576047 [No Abstract] [Full Text] [Related]
17. Mongolism, delayed fertilization and human sexual behaviour. Cannings C; Cannings MR Nature; 1968 May; 218(5140):481. PubMed ID: 4231250 [No Abstract] [Full Text] [Related]