美国国家卫生研究院的丹尼斯。德雷纳在会上说道，持续的口吃至少一部分原因是基因问题。
Dennis Drayna of America's National Institutes of Health argued to the meeting that persistent stuttering is at least partly a matter of genes.
美国国家卫生研究院的丹尼斯。德雷纳在会上说道，持续的口吃至少一部分原因是基因问题。
Dennis Drayna of America's National Institutes of Health argued to the meeting that persistent stuttering is at least partly a matter of genes.
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