标签:Defect- - 英国华人论坛

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Atrial Septal Defect- Definition, Causes, Symptoms

Atrial septal defect is an abnormality of the upper chambers of the heart (atria) where the wall between the right and left atria does not close completely. In general the defect is a hole in the wall (septum) between the top two chambers of...英国华人论坛