Okamura, Akihiko
Watanabe, Masayuki
Kozuki, Ryotaro
Toihata, Tasuku
Yuda, Masami
Imamura, Yu
Mine, Shinji
Article History
Received: 18 June 2018
Accepted: 15 October 2018
First Online: 25 October 2018
Compliance with ethical standards
: 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 Declaration of Helsinki and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study. This article does not contain any studies with animals performed by any of the authors.
: The authors declare that they have no conflict of interest.