Aiba, T.
Uehara, K.
Mukai, T.
Hattori, N.
Nakayama, G.
Nagino, M.
Article History
Received: 25 October 2018
Accepted: 19 November 2018
First Online: 27 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This research was performed 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.
: Informed consent was obtained in accordance with the standards set forth by hospital regulations.