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【单选题】
关于功能失调性子宫出血，下列哪项错误（）A.
调节生殖的神经内分泌机制失常可引起
B.
可发生于任何年龄，但绝经前期较多见
C.
青春期功血多数是有排卵性功血
D.
不伴有全身和生殖器官器质性病变
E.
绝经期功血多数是无排卵功血
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