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Proportion of prenatally diagnosed CCHD cases according to clinical presentation and by programme International Clearinghouse for Birth Defects Surveillance and Research (ICBDSR) Critical Congenital Heart Defects (CCHD) Prenatal Diagnosis study 2000–2014. Programmes (ordered by descending prenatal detection proportion) contributed data for different years within this time period (see table 1). India-Chennai is a prenatal diagnosis-only programme. MCA, multiple congenital anomalies.
