In Reply to the Letter to the Editor Regarding "Intra- and Extramedullary Dumbbell-Shaped Schwannoma of the Medulla Oblongata: A Case Report and Review of the Literature".Zhang, Qing; Ni, Ming; Liu, Wei-Ming; Jia, Wang; Jia, Gui-Jun; Zhang, Jun-Ting*PubMed-摘要-关键词-