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Abstract： To examine mutation in the partial coding region of GJB2 gene in 43 cases of Chinese patients with non-syndromic hearing impairment (NSHI). 摘 要： 目的：分析43例中國人非綜合征性聽力減退(NSHI)患者的GJB2基因部分編碼區(qū)的突變的情況。