If a disease has a genetic basis, it will occur in familial aggregates.

如果一种疾病有遗传基础，它将以家族聚集性的方式发生。

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If a disease has a genetic basis, it will occur in familial aggregates.

如果一种疾病有遗传基础，它将以家族聚集性的方式发生。

youdao