Funding for this research was provided by:
Translational Research Center for Rehabilitation Robots, Korea National Rehabilitation Center, Ministry of Health & Welfare, Korea (NRCTR-IN15002, NRCTR-IN16002)
Text and Data Mining valid from 2019-07-29
Received: 22 November 2018
Accepted: 19 June 2019
First Online: 29 July 2019
Ethics approval and consent to participate
: This study was approved by Korea National Rehabilitation Center Institutional Review Board (NRC-2015-01-002).
: Not Applicable.
: The authors declare that they have no competing interests.