迅速进展性痴呆是一类进展快速的痴呆综合征，在起病数周至数月内出现智能减退达严重程度。
Rapidly progressive dementia(RPD) is a kind of dementia syndrome which has a much more rapid course than other dementia caused by neural degenerative diseases.
慢性肾功能衰竭是由于各种慢性肾脏疾病晚期肾功能减退引起的综合征。
Chronic renal failure (CRF) refers to the syndromes resulting from decreased renal function at the late stage of various types of chronic kidney diseases.
目的：分析43例中国人非综合征性听力减退（NSHI）患者的GJB2基因部分编码区的突变的情况。
Objective:To examine mutation in the partial coding region of GJB2 gene in 43 cases of Chinese patients with non syndromic hearing impairment (NSHI).
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