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Authors
Wang, Yuwen
Zhang, Yuhong
Sundquist, Kristina
Sundquist, Jan
Yang, Huifang
Li, Xinjun
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Funding
Funding for this research was provided by:
Lund University
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Article History
Received: 10 April 2025
Accepted: 25 June 2025
First Online: 15 July 2025
Declarations
:
: The authors declare no competing interests.
: This study was approved by the regional ethical review board in Lund, Sweden on Feb. 6th, 2013 (registration No 2012/795) and later amendments. Guidelines of the Helsinki Declaration were followed. Data were obtained from the national registers collected by various Swedish health and social agencies. The agency Statistics Sweden linked the (pseudonymised) unique personal identification number assigned to all Swedish residents at birth or migration.
: Informed consent was not applicable, as the study was based on secondary pseudonymized data from registers.
