Funding for this research was provided by:
Wenner-Gren Stiftelserna (SSv2019-0008)
Gothenburg University Library
Received: 6 July 2020
Accepted: 20 October 2020
First Online: 1 February 2021
Ethics approval and consent to participate
: This study was approved by the Ethics Committee at Karolinska Institutet (2005/174 – 31/4; 2010/1258–32). The analyses were conducted on de-identified datasets and the requirement for informed consent was waived.
: Not applicable.
: There are neither any financial relationships with any organisations that might have an interest in the submitted work in the previous three years, nor any other relationships or activities that could appear to have influenced the submitted work.