Okamura, Akihiko
Yamashita, Kotaro
Kozuki, Ryotaro
Takahashi, Keita
Toihata, Tasuku
Imamura, Yu
Mine, Shinji
Watanabe, Masayuki
Article History
Received: 20 May 2019
Accepted: 19 August 2019
First Online: 30 August 2019
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 Helsinki declaration 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.