Objective This study examined the prevalence of deletion and subtle mutations of survival motor neuron( SMN) gene in children with spinal muscular atrophy( SMA).是什么意思_Objective This study examined the prevalence of deletion and subtle mutations of survival motor neuron( SMN) gene in children with spinal muscular atrophy( SMA).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句