Yamaguchi, Tsuyoshi
Higashihara, Eiji
Okegawa, Takatsugu
Miyazaki, Isao
Nutahara, Kikuo
Article History
Received: 16 January 2018
Accepted: 31 March 2018
First Online: 22 May 2018
Compliance with ethical standards
:
: The authors have declared that no conflict of interest exists.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee at which this studies were conducted and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethics Committee approval has been obtained (Approval number 482).
: Informed consent was obtained from all individual participants included in the study.