Kitajima, Kazuhiro
Nakatani, Koya
Yamaguchi, Kazushige
Nakajo, Masatoyo
Tani, Atsushi
Ishibashi, Mana
Hosoya, Keiko
Morita, Takahiro
Kinoshita, Takayuki
Kaida, Hayato
Miyoshi, Yasuo
Article History
Received: 23 January 2018
Accepted: 5 April 2018
First Online: 12 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Because our study is retrospective, formal consent is not required.This article does not contain any studies with animals performed by any of the authors.
: This retrospective study was approved by the institutional review board, and the need for patient informed consent was waived.