21 透納氏症候群(Turner syndrome)患童很少出現下列那一種先天性心臟異常?
(A)bicuspid aortic valve
(B)aortic stenosis
(C)aortic coarctation
(D)pulmonary stenosis

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統計: A(2), B(2), C(7), D(33), E(0) #1060896