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Authors
Vilkko, Riitta https://orcid.org/0000-0001-7798-8123
Räisänen, Sari
Gissler, Mika
Stefanovic, Vedran
Heinonen, Seppo
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Funding
Funding for this research was provided by:
Suomen Kulttuurirahasto
Helsingin ja Uudenmaan Sairaanhoitopiiri (THY Y1017N0183)
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Article History
Received: 5 July 2020
Accepted: 11 January 2021
First Online: 19 January 2021
Ethics approval and consent to participate
: The Finnish national data protection legislation guided the collection and use of the data owned by Finnish Institute of Health and Welfare (THL). All the data was anonymized by the register keeper, and patients or public were not involved in this study. For these reasons ethics approval was not required.
: Not applicable.
: The authors declare that they have no competing interests.
