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Table 1 Clinical characteristics of the cases included in the present cohort

From: Contribution of genetic variants to congenital heart defects in both singleton and twin fetuses: a Chinese cohort study

  1. aIncluding other common, uncomplicated combinations of heart defects except for VSD + COA
  2. bIncluding absence of pulmonary artery (n = 2), interrupted of the inferior vena cava with azygos continuation (n = 1), aortopulmo-nary septal defect (n = 1), congenital aortic sinus aneuysm (n = 1)
  3. AS Aortic stenosis; ASD Atrial septal defect; APVR Anomalous-pulmonary venous return; AVSD Atrioventricular septal defect; COA Coarctation of aorta; d-TGA d-Transposition of great arteries; DCDA Dichorionic diamniotic; DORV Double outlet right ventricle; HLHS Hypoplastic left heart syndrome; IAA Interrupted aortic arch; LVOTO Left ventricular outflow tract obstruction; MCDA Monochorionic diamniotic; MCMA Monochorionic monoamniotic; PA Pulmonary atresia; PTA Persistent truncus arteriosus; PVS Pulmonary stenosis; RVOTO Right ventricular outflow tract obstruction; VSD Ventricular septal defect