Funding for this research was provided by:
the Dutch Rehabilitation foundation (2014039)
Received: 3 September 2020
Accepted: 22 September 2021
First Online: 9 October 2021
: The Ethics Committee of the University Medical Centre Utrecht declared that this protocol did not need formal ethical approval under the Dutch law regulating medical research on human beings (Reference Number: 15-449/C). Next, in accordance with the local requirements, the Medical Ethics Committees of all participating rehabilitation centers approved this protocol. The study was carried out according to the code of conduct formulated by the Helsinki code, as part of that all participants gave written informed consent before entering the study.
: Not applicable.
: No conflict of interest is reported.