Funding for this research was provided by:
Japan Society for the Promotion of Science (JP15K17333, JP17942790)
Ministry of Education, Culture, Sports, Science and Technology (JP17H05966, JP16H01520)
Text and Data Mining valid from 2018-07-17
First Online: 17 July 2018
Compliance with Ethical Standards
: The study was approved by the ethics committee of the National Rehabilitation Center for Persons with Disabilities.
: All participants and their parents gave written informed consent after the study procedures had been fully explained.