Funding for this research was provided by:
european social fund (S20659)
Received: 10 May 2019
Accepted: 13 February 2020
First Online: 12 March 2020
Ethics approval and consent to participate
: The project received an ethical statement from the Pirkanmaa Hospital District, finding no obstacles to conducting the study. Under Finnish legislation at the time of study, where large groups of people are dealt with from registers, individual consent is not required.
: Not applicable.
: The authors declare no competing interests.