Funding for this research was provided by:
Japan Agency for Medical Research and Development (18dm0207017h0005)
Text and Data Mining valid from 2019-08-23
Received: 8 June 2019
Accepted: 12 August 2019
First Online: 23 August 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.All participants gave written informed consent to participate in the study, which was approved by the institutional ethics committee at the National Center of Neurology and Psychiatry (A2014-146).
: Not applicable
: The authors declare that they have no competing interests.