Takeda, Kazuya http://orcid.org/0000-0002-7354-4063
Umezawa, Rei
Takahashi, Noriyoshi
Matsushita, Haruo
Kozumi, Maiko
Ishikawa, Yojiro
Yamamoto, Takaya
Takeda, Ken
Jingu, Keiichi
Article History
Received: 6 December 2017
Accepted: 23 March 2018
First Online: 26 March 2018
Compliance with ethical standards
:
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent or substitute for it was obtained from all patients for being included in the study. The institutional review board approved this retrospective study (2014-1-543).
: The authors declare that they have no conflict of interest.