Funding for this research was provided by:
Japan Agency for Medical Research and Development (18fk02100)
Nakatomi Foundation (not applicable)
Text and Data Mining valid from 2019-05-02
Received: 28 August 2018
Accepted: 8 April 2019
First Online: 2 May 2019
Ethics approval and consent to participate
: This work did not involve human or animal subjects.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.