Funding for this research was provided by:
Stiftelsen för Strategisk Forskning (RB13-0196)
Received: 30 April 2019
Accepted: 27 August 2019
First Online: 26 September 2019
: All participants gave their written informed consent and the study was approved by the Ethical Committee at Umeå University in Sweden (Dnr 2013–185-31 M).
: Not applicable.
: Anna-Carin Olin is a founder of PExA AB, and also a board-member and chair-holder of PExA AB.