Funding for this research was provided by:
Ministry of Health, Labour and Welfare (Grant-in-Aid from the Research Committee of Prion Disease and Slow Virus Infection, Grant-in-Aid from the Research Committee of Molecular Pathogenesis and Therapies for Prion Disease and Slow Virus Infection)
Japan Society for the Promotion of Science (18K07397)
Text and Data Mining valid from 2018-12-03
Received: 4 September 2018
Revised: 20 November 2018
Accepted: 24 November 2018
First Online: 3 December 2018
Compliance with ethical standards
: The authors have NO affiliations with or involvement in any organization or entity with any financial interest, or non-financial interest in the subject matter or materials discussed in this manuscript.
: The protocol followed ethical requirements and was approved by the Institutional Ethics Committee of Tokyo Medical and Dental University. This study was performed in accordance with the ethical standards laid down by the 2013 Declaration of Helsinki.