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Authors
Mertimo, Teija
Heikkala, Eveliina
Niinimäki, Jaakko
Blanco Sequeiros, Roberto
Määttä, Juhani
Kankaanpää, Markku
Oura, Petteri
Karppinen, Jaro
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Article History
Received: 1 October 2022
Accepted: 24 March 2023
First Online: 14 April 2023
Declarations
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: The study followed the principles of the Declaration of Helsinki and its later amendments. Study was approved by the Northern Ostrobothnia Hospital District Ethical Committee 94/2011 (12.12.2011). Participation in the NFBC1966 was voluntary and each study participant granted their written informed consent. Personal identity information was encrypted and pseudonymized before handed over to the researchers.
: The authors declare no competing interests.
: Not applicable.
: The authors declare no conflict of interest.
