Funding for this research was provided by:
Tekes (2946/31/2013)
Article History
Received: 12 March 2019
Accepted: 5 September 2019
First Online: 28 October 2019
Ethics approval and consent to participate
: All participants signed a written informed consent form. However, an ethical review was not deemed necessary based on the guidelines of the Ethics committee of the Tampere region (where the study was conducted), which follow the guidelines of Finnish National Board on Research Integrity (TENK; ).
: Not applicable.
: The authors declare that they have no competing interests.