Text and Data Mining valid from 2018-06-27
Received: 20 April 2018
Accepted: 8 June 2018
First Online: 27 June 2018
Ethics approval and consent to participate
: This study was conducted with the approval of Department of Neurosurgery, The First Affiliated Hospital of NanChang university.
: Formal consent has been obtained from all patients and their parents involved in the study and they have all agreed to publish their clinical information and data.
: The authors declare that they have no competing interests.