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Hollis ND, Allen EG, Oliver TR, Tinker SW, Druschel C, Hobbs CA, O'Leary LA, Romitti PA, Royle MH, Torfs CP, Freeman SB, Sherman SL, Bean LJH. Preconception folic acid supplementation and risk for chromosome 21 nondisjunction: A report from the National Down Syndrome Project. American J of Med Genetics Pt A. 2013 Feb 07;161(3):438–44. doi: 10.1002/ajmg.a.35796. |