Funding for this research was provided by:
Japan Society for the Promotion of Science (26291091, 17H05976, 16J0445818)
Text and Data Mining valid from 2018-04-04
Received: 10 July 2017
Accepted: 28 March 2018
First Online: 4 April 2018
Compliance with ethical standards
: K. Matsumura and T. Miyatake declare that they have no conflict of interest.
: All applicable international, national, and institutional guidelines for the care and use of animals were followed. We followed all of the Committee on Publication on Ethics (COPE) guidelines.
: This article does not contain any studies with human participants performed by any of the authors.