Funding for this research was provided by:
Japan International Cooperation Agency (J-14-10306)
Ministry of Education, Culture, Sports, Science and Technology (25116711)
Japan Society for the Promotion of Science (16K15409, 16K18988, 15H04673, 17K08542, 17K08532)
Text and Data Mining valid from 2018-10-29
Received: 20 August 2018
Accepted: 13 October 2018
First Online: 29 October 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.