Lövgren, Anna http://orcid.org/0000-0003-2920-6654
Visscher, Corine M.
Alstergren, Per
Lobbezoo, Frank
Häggman-Henrikson, Birgitta
Wänman, Anders
Funding for this research was provided by:
Västerbotten Läns Landsting
Article History
Received: 17 December 2018
Accepted: 2 April 2019
First Online: 25 April 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.