摘要
To the Editor： With interest, we read the article reported by Liu et al. about the frequency of central and peripheral auditory system affection in 73 patients with a mitochondrial disorder （MID） due to mitochondrial DNA （rntDNA） point mutations or a single mtDNA deletion. We had the following comments and concerns.
To the Editor： With interest, we read the article reported by Liu et al. about the frequency of central and peripheral auditory system affection in 73 patients with a mitochondrial disorder （MID） due to mitochondrial DNA （rntDNA） point mutations or a single mtDNA deletion. We had the following comments and concerns.
