6Taruscio D,Arriola L,Baldi F,et al.European recommendations for primary prevention of congenital anomalies:a joined effort of EUROCAT and EUROPLAN Projects to facilitate inclusion of this topic in the National Rare Disease Plans[J].Public Health Genomics,2014,17(2):115-123.
7Ray JG.Folic acid food fortification in Canada[J].Nutr Rev,2004,62(Suppl):S35-S39.
8De Wals P,Tairou F.Reduction in neural-tube defects after folic acid fortification in Canada[J].N Engl J Med,2007,357(2):135-142.
9Ren A,Zhang L,Hao L,et al.Comparison of blood folate levels among pregnant Chinese women in areas with high and low prevalence of neural tube defects[J].Public Health Nutrition,2007,10(8):762-768.
