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Infections are the chief cause of heart disease in childhood and early adult life.
Congenital heart defects, which develop before birth and are usually discovered shortly thereafter, account for about 2% of all heart defects. «Blue babies» have a congenital defect that permits the bluer venous blood to mix with arterial blood.
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When do congenital heart defects develop?
They develop in late adult life.
They develop in early adult life.
They develop in childhood.
They develop when babies are in their mothers’ body.