3Cuneo BF,Cur ran LF,Davis N,et al. Trends in prenat aldiagnosis of critical cardiac defects in an integrat edobstetrican dpediatr/c cardiac imaging center[J]. J Perinatol, 2012,24 ( 11 ) : 674-678.
4Rosano A,Bot to LD,Botting B,et al. Infant mort ality and congenital anomalies from 1950 to 1994 :an international perspective[J]. J Epi demiol Community Health,2010,54(9):660-666.
5Simpson LL. Screening for congenital heart disease[J]. Obstet Gynecol Clin North Am, 2011,31 ( 1 ) : 51-59.