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Figure 3 The incidence of ventricular septal defects (VSDs) on the horizontal axis is plotted against the total incidence of all congenital heart disease (CHD) in the left panel, against the incidence of the remainder of CHD (that is, all CHD except for VSD) in the center panel, and against the incidence of all cyanotic CHDs in the right panel (all incidences/million live births).