近亲非近亲结婚
Consanguineous or non-consanguineous marriage
以上为机器翻译结果，长、整句建议使用 人工翻译 。
进行了家系调查，其中二例为近亲结婚，一例为非近亲结婚，结合文献对病因和诊断方法进行了讨论。
An investigation was made on family history. Their parents of two out of these patients married close relatives. Etiology and diagnostic methods are discussed.
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