Funding for this research was provided by:
FP7 Health (305983)
Received: 20 March 2019
Accepted: 11 June 2019
First Online: 26 June 2019
Ethics approval and consent to participate
: All participants agreed to participate in the pilot study after reading the objectives of the experiment and approving the informed consent.
: Not applicable.
: The authors declare that they have no competing interests.