Received: 17 November 2019
Accepted: 3 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: The Methods section in the manuscript includes a statement that the Institutional Review Boards of the National Traffic Injury Rehabilitation Hospital approved our study. This study was a retrospective analysis and received approval from an ethical standards committee to conduct this study. Patient permission was not needed as the data used in this study were de-identified and anonymised upon collection and transferred to the research team.
: Patient’s permission was not required as the data were de-identified using existing records. We omitted any identifying details regarding the patients from the manuscript. The article does not include any figure or video of a recognizable patient.
: HYL, JHP, ARK, MP, and TWK declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.