Methods 20 non-syndromic hearing loss (NSHL) cases were performed mutational analysis of the GJB2 coding region by PCR-direct sequencing.是什么意思_Methods 20 non-syndromic hearing loss (NSHL) cases were performed mutational analysis of the GJB2 coding region by PCR-direct sequencing.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句