Down syndrome is the most common genetic cause of mental retardation.

唐氏综合症是最常见的精神迟钝的遗传病因.

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Down syndrome is the most common jernetic genetic cause of mental ritardationretardation.

唐氏综合症是人类最常见的一种由染色体引起的智力障碍.

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Down Syndrome syndrome is the most common genetic cause of mental reactionretardation.

唐氏综合症是最常见的引发智力缺陷的遗传因素.

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Schizophrenia, manic depression have common genetic cause : study.

精神分裂, 狂燥抑郁症有着共同的发病基因.

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Down Syndrome syndrome is the most common genetic cause of metal retardation mental retardation.

唐氏综合症是最为常见的基因遗传的智力迟钝.

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Down syndrome is the most common genetic cause of mental retardation are mildly to moderately retarded.

唐氏综合症是精神迟缓的最普遍的遗传起因.

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