Okamura, Akihiko
Watanabe, Masayuki
Fukudome, Ian
Yamashita, Kotaro
Yuda, Masami
Hayami, Masaru
Imamura, Yu
Mine, Shinji
Article History
Received: 24 December 2017
Accepted: 20 February 2018
First Online: 26 February 2018
Compliance with ethical standards
:
: All procedures were performed in accordance with the ethical standards of our institutional review board and with the Helsinki Declaration of 1964 and later versions. All authors followed the policy concerning Informed Consent.
: All authors declare that they have no conflict of interest.