Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (19H01047, 18K07459, 17H06064)
Ministry of Health, Labour and Welfare (H29-nanbyo-ippan)
Takeda Science Foundation (NA)
Japan Agency for Medical Research and Development (19dm0307104h0001)
Text and Data Mining valid from 2020-03-17
Received: 29 October 2019
Accepted: 5 March 2020
First Online: 17 March 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee of the National Center of Neurology and Psychiatry (A2018–013). Informed consent was obtained from each participant.
: We obtained consent for publication from each participant.
: The authors declare that they have no competing interests.