Funding for this research was provided by:
Japan Society for the Promotion of Science (15K14457, 17H0397)
Japan Agency for Medical Research and Development
Article History
Received: 16 October 2017
Accepted: 23 November 2017
First Online: 14 December 2017
Compliance with ethical standards
:
: Susumu Uchiyama declares that he has no conflicts of interest. Masanori Noda declares that he has no conflicts of interest. Elena Krayukhina declares that she has no conflicts of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.