Salonen, Anne H.
Kontto, Jukka
Perhoniemi, Riku
Alho, Hannu
Castrén, Sari
Funding for this research was provided by:
The Ministry of Social Affairs and Health, Helsinki, Finland (based on the article 52 Appropriation of the Lotteries Act).
Article History
Received: 28 June 2017
Accepted: 25 May 2018
First Online: 5 June 2018
Ethics approval and consent to participate
: The survey was conducted in accordance with the ethical standards of the Declaration of Helsinki. The Ethics Committee of the National Institute for Health and Welfare, Finland, approved the research protocol (THL/1122/6.02.01/2014). Potential participants received written and verbal information about the study and the principles of voluntary participation. Verbal informed consent was obtained from all participants. Permission to use the register data was obtained from Statistics Finland.
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