Funding for this research was provided by:
Academy of Finland (Grants #287488 and #319200)
Finnish Work Environment Fund (Grant #117308)
Academy of Finland (Grant #1294514)
Juho Vainio Foundation
Strategic Research Council of the Academy of Finland (Grants #293103 and #314250)
Received: 17 May 2019
Accepted: 7 October 2019
First Online: 30 October 2019
Ethics approval and consent to participate
: This is a fully register based study and no ethical approval from a human sciences ethics committee was required to process the data (ExternalRef removed, p. 62). Using register-based data is not required to be based on informed consents. Instead, according to the Finnish Data Protection Act, the data can be processed for scientific research purposes based on public interest (ExternalRef removed, see Section 4 for English translation and ExternalRef removed, 4 §, for the official Finnish version).
: Not applicable.