Luan, Min
Yang, Fen
Miao, Maohua
Yuan, Wei
Gissler, Mika
Arkema, Elizabeth V.
Lu, Donghao
Li, Jiong
László, Krisztina D.
Funding for this research was provided by:
the Swedish Council for Working Life and Social Research (2015-00837)
National Natural Science Foundation of China (82073570)
the Novo Nordisk Foundation (NNF18OC0052029)
Nordic Cancer Union (R275-A15770, R278-A15877)
Danish Council for Independent Research (DFF-6110-00019B, 9039-00010B, 1030-00012B)
Karen Elise Jensens Fond (2016)
the Innovation-oriented Science and Technology Grant from NHC Key Lab of Reproduction Regulation (CX2022-04)
the Swedish Heart and Lung Foundation (20180306)
the China Scholarship Council (202006100013)
Karolinska Institute
Article History
Received: 20 October 2022
Accepted: 17 March 2023
First Online: 3 April 2023
Declarations
:
: According to Danish, Finish, and Swedish legislation, register-based studies do not require informed consent. The study was approved by the Danish Data Protection Agency (No. 2013–41-2569) and the Research Ethics Committee at Karolinska Institute in Stockholm (No. 2016/288–31/1, 2021–03315). The requirement for ethical approval was waived in Finland, since the data were anonymous and the registered individuals were not contacted.
: Not applicable.
: The authors declare that they have no competing interests.