Billing, Ola http://orcid.org/0000-0001-5824-6263
Holmgren, Ylva
Nosek, Daniel
Hedman, Håkan http://orcid.org/0000-0001-6891-6996
Hemmingsson, Oskar http://orcid.org/0000-0003-1732-168X
Article History
Received: 24 August 2020
Revised: 8 April 2021
Accepted: 20 April 2021
First Online: 4 May 2021
Compliance with ethical standards
:
: The authors declare no competing interests.
: The study was approved by the regional Ethics Committee in Umeå, Sweden, DNR 2015-415-31 M.