Kaneko, T.
Funahashi, K.
Ushigome, M.
Kagami, S.
Goto, M.
Koda, T.
Nagashima, Y.
Shiokawa, H.
Koike, J.
Article History
Received: 17 February 2018
Accepted: 8 November 2018
First Online: 13 November 2018
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.
: This study was approved by the ethical committee of our institution (no. M17242).
: This article does not contain any studies directly involving human participants, as it is a review of data already collected in a database.
: For this type of study, formal consent was not necessary.