Calling, Susanna
Johansson, Sven-Erik
Wolff, Moa
Sundquist, Jan
Sundquist, Kristina
Funding for this research was provided by:
Lund University
Article History
Received: 12 November 2020
Accepted: 24 March 2021
First Online: 5 April 2021
Declarations
:
: The study protocol was given prior approval by the Ethics Committee at Lund University (approval no. 2011/494). Written informed consent was obtained from each participant included in the study. The study protocol conforms to the ethical guidelines of the 1975 Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.