Nagata, Rihito
Akamatsu, Nobuhisa
Nakazawa, Akiko
Kaneko, Junichi
Ishizawa, Takeaki
Arita, Junichi
Hasegawa, Kiyoshi
Article History
Received: 5 February 2020
Accepted: 21 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: This study was approved by the institutional review board of Tokyo University Hospital (approval number 2158). Written informed consent for surgery and use of their clinical data was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.