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Article History

Received: 10 June 2024

Accepted: 26 May 2026

First Online: 2 June 2026

Declarations

:

: The study followed the principles of the Declaration of Helsinki (World Medical Association, 2018). Ethical approvals were given by the Swedish Ethical Review Authority (No. 2019–03626, 2020–04657 and 2023-04074-02). When pregnant women are registered at antenatal care, they are informed about the purpose of the Swedish Pregnancy Register provided via a poster, and the possible use of register data in future research. Information includes the voluntary nature of contributing with data to the quality register and the option to opt-out. By accepting to be a subject in the register, the women thus give their consent to participate in research based on the register data. No additional informed consent was sought prior to inclusion in the present study.

: Not applicable.

: The authors declare no competing interests.