Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (15K09867, 18K07559)
Ministry of Health, Labour and Welfare (H29-Nanchi-Ippan-033)
Japan Agency for Medical Research and Development (JP18dm0107109, JP18kk0205009)
Received: 3 January 2019
Accepted: 31 January 2019
First Online: 12 February 2019
: Autopsy and gene analysis were carried out after written informed consent was obtained from family members, and all experiments in this study were approved by the ethical committees of the Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences (RIN1626–260), Niigata University (H28–870), and National Hospital Organization Minami-Okayama Medical Center (H29–65).
: Family members have consented to publication.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.