Endo, Kenji
Morita, Satoru
Suzaki, Shingo
Yamazaki, Hiroshi
Nishina, Yu
Sakai, Shuji
Article History
Received: 23 November 2017
Accepted: 26 March 2018
First Online: 3 April 2018
Compliance with ethical standards
:
: The authors have declared no conflicts of interest.
: This retrospective, single-institution study was approved by the institutional review board of our facility.
: Written informed consent for the inclusion of individual patient data in the analysis was waived because of the retrospective nature of the investigation. All patients gave their consent for the AVS procedure.