Kan, Kaying http://orcid.org/0000-0001-5337-3001
Lokkerbol, Joran http://orcid.org/0000-0001-9949-5442
Jörg, Frederike http://orcid.org/0000-0003-1720-1231
Visser, Ellen http://orcid.org/0000-0002-6370-5484
Schoevers, Robert A. http://orcid.org/0000-0003-0760-9866
Feenstra, Talitha L. http://orcid.org/0000-0002-5788-0454
Funding for this research was provided by:
Stichting de Friesland (DS29)
Article History
Accepted: 18 February 2021
First Online: 16 March 2021
Declarations
:
: This study was funded by Stichting De Friesland, Leeuwarden, the Netherlands (grant number DS29). Stichting De Friesland had no role in the study design; collection, analysis, and interpretation of the data; report writing; or the decision to submit the article for publication.
: Kan, Lokkerbol, Jörg, Visser, Schoevers, and Feenstra have no conflicts of interest that are directly relevant to the content of this article.
: This research was conducted retrospectively from already available registry data. The Medical Ethics Review Board (METc) of the University Medical Center Groningen confirmed that no ethical approval was required.
: The METc of the University Medical Center Groningen granted exemption for the study, in line with the Dutch Medical Research involving Human Subjects Act.
: Approval to analyze the data was obtained under the General Data Protection Regulation, provided that researchers would only access the data for specific research questions as agreed upon in the IMPROVE consortium. We are not legally or ethically allowed to publicly post our dataset.
: Conception and design: Kan, Jörg, Feenstra, and Lokkerbol. Kan, Lokkerbol, Feenstra, Jörg, and Visser analyzed the data. All authors interpreted the data. Kan, Jörg, and Feenstra drafted the article. All authors critically revised the article for important intellectual content and gave approval for the final version to be published.