This is the largest study of the siblings of children with autism ever conducted, the first to follow families up to the time of diagnosis as opposed to looking back once they have been diagnosed.

同时也是规模最大的一次对自闭症患儿的兄弟姐妹做跟踪调查的研究，也是首次对这些家庭的新生儿跟踪调查至能被诊断的年龄，患儿一旦被诊断为自闭症，这些诊断前的记录可以用来作参照。

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