Text and Data Mining valid from 2019-04-13
Received: 16 January 2019
Accepted: 11 March 2019
First Online: 13 April 2019
Compliance with ethical standards
: The study was conducted in accordance with the Declaration of Helsinki.
: The data of this study was extracted from database of pediatric brain tumors in Taipei Veterans General Hospital, and the study protocol was approved by the Institutional Review Board of the Taipei Veterans General Hospital. The IRB number is 97-07-05A.
: The authors declare that they have no conflict of interest.
: Informed consent to this study was obtained from the parents of all participants.