Oka, Norikiyo
Fujii, Kenichi
Kadohira, Tadayuki
Kitahara, Hideki
Fujimoto, Yoshihide
Takahara, Masayuki
Himi, Toshiharu
Ishikawa, Keishi
Sano, Koichi
Kobayashi, Yoshio
Article History
Received: 4 September 2018
Accepted: 15 February 2019
First Online: 19 February 2019
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.