Morihana, Eiji
Yamamura, Kenichiro
Sugitani, Yuichiro
Kado, Hideaki
Takahata, Yasushi
Nakano, Toshihide
Nakashima, Yasutaka
Fusazaki, Naoki
Ohga, Shouichi
Article History
Received: 4 June 2017
Accepted: 4 January 2018
First Online: 19 January 2018
Compliance with Ethical Standards
:
: All authors have no conflict of interest to report.
: 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.
: Not obtained due to retrospective study design.