Terai, Shozaburo
Hashimoto, Yusuke
Yamasaki, Shinya
Takahashi, Shinji
Shimada, Nagakazu
Nakamura, Hiroaki
Article History
Received: 16 November 2018
First Online: 9 April 2019
Compliance with ethical standards
:
: No authors declare any conflicts of interest relating to the submitted paper.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.