摘要 : Birth defects,including congenital structural or functional abnormalities,remained a primary cause of child mortality and morbidity and represented a significant clinical and public health challenge.Annually,3%–6%of infants,nearly... 展开 Birth defects,including congenital structural or functional abnormalities,remained a primary cause of child mortality and morbidity and represented a significant clinical and public health challenge.Annually,3%–6%of infants,nearly 8 million newborns,were born worldwide with a serious birth defect,among those more than 90%are in low and middle-income countries(1). 收起