Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (Program for Promoting the Reform of National Universities (Kobe University))
Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research (17H04757))
Article History
Received: 21 November 2018
Accepted: 27 April 2019
First Online: 10 May 2019
Compliance with ethical standards
:
: Kazuhiro Harada, Kouhei Masumoto and Narihiko Kondo declare that they have no conflicts of interest.
: 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.