Winkvist, Anna
Johansson, Ingegerd
Ellegård, Lars
Lindqvist, Helen M
Funding for this research was provided by:
University of Gothenburg
Article History
Received: 19 October 2023
Accepted: 23 February 2024
First Online: 2 March 2024
Declarations
:
: The original study was approved by the Research Ethics Committee of Umeå University, Sweden, in 1984, and the current study was approved by the Regional Ethical Review Board, Gothenburg, Sweden, in 2017 (dnr 276 − 17). All procedures performed were in accordance with the ethical standards of the Research Ethics Committees in Sweden and with the 1964 Helsinki Declaration and its later amendments. All study participants provided a written informed consent.
: Not applicable.
: The authors declare no competing interests.