Bäck, Anna-Karin http://orcid.org/0000-0002-2239-6793
Savvopoulos, Christos http://orcid.org/0000-0001-7528-3816
Geijer, Håkan http://orcid.org/0000-0003-3253-8967
Funding for this research was provided by:
Region Örebro län (OLL-915121)
Örebro University
Article History
Received: 30 April 2021
Accepted: 5 August 2021
First Online: 19 August 2021
Declarations
:
: The authors (Anna-Karin Bäck, Christos Savvopoulos and Håkan Geijer) report no conflict of interest.
: The study was performed in accordance with the Declaration of Helsinki. This study was registered with PROSPERO (CRD42020167484, 7 February 2020).
: No individual patient data were evaluated during the study and the included primary studies had undergone separate ethics approvals.
: All authors (Anna-Karin Bäck, Christos Savvopoulos and Håkan Geijer) read and approved the final manuscript.