Funding for this research was provided by:
Japan Society for the Promotion of Science (23659390)
Text and Data Mining valid from 2018-10-31
Received: 19 May 2018
Accepted: 14 October 2018
First Online: 31 October 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the National Center of Neurology and Psychiatry, Tokyo, Japan. All participants provided informed consent. We managed the data to ensure that the participants were not identified.
: Not applicable.
: The authors declare that they have no competing interests.
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