Maruyama, Koji
Sofue, Keitaro
Okada, Takuya
Koide, Yutaka
Ueshima, Eisuke
Iguchi, Genzo
Tani, Ryuichiro
Gentsu, Tomoyuki
Horinouchi, Hiroki
Sasaki, Koji
Yamaguchi, Masato
Sugimoto, Koji
Murakami, Takamichi
Article History
Received: 28 September 2018
Accepted: 25 November 2018
First Online: 5 December 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: Consent for publication was obtained for every individual person’s data included in the study.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: This retrospective study design was approved by our institutional review board. For this type of study formal consent is not required.