Funding for this research was provided by:
King Salman Center for Disability Research (NA)
Received: 10 October 2019
Accepted: 21 May 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: This study was approved (RAC# 2121053, 2080006 and 2070023) by Office of Research Ethics at the King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia. Informed consent was obtained from all patients included in the study and includes a statement confirming that experimental methods comply with the Helsinki Declaration.
: Not applicable.
: The authors declare that they have no competing interests.