Perhoniemi, Riku http://orcid.org/0000-0002-3199-3952
Tuulio-Henriksson, Annamari http://orcid.org/0000-0003-4452-1572
Blomgren, Jenni http://orcid.org/0000-0001-5466-0205
Laaksonen, Mikko http://orcid.org/0000-0002-6979-9872
Funding for this research was provided by:
Strategic Research Council of the Academy of Finland (293103/314250)
Article History
Received: 26 August 2019
Accepted: 28 February 2020
First Online: 14 March 2020
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: The study used secondary data retrieved from registers and no human subjects were contacted. Thus, no ethics approval was required according to Finnish law and conventions. Good scientific practice and data protection regulations were followed in the collection, analyzing and reporting of the data. Permissions to use the data have been obtained from Kela, the Finnish Centre for Pensions and Statistics.