Funding for this research was provided by:
Forskningsrådet i Sydöstra Sverige
Received: 6 March 2020
Accepted: 15 September 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: The study was approved by the local ethics committee of Linköping University, Sweden (Dnr: 2011 72/31). Completion of the postal survey was deemed to be the agreement of participants informed consent and this was approved by the ethics committee.
: Not applicable.
: The authors have no conflicts of interest to declare.