Article History
Received: 17 February 2019
Accepted: 19 June 2019
First Online: 1 July 2019
Ethics approval and consent to participate
: Ethical Committee approval for this study was not necessary according to Finnish law and the obligations of the National Institute for Health and Welfare (THL). This study was considered to be routine work (quality assurance) at THL and the Department’s Director approved the data collection.
: Not applicable.
: The authors declare that they have no competing interests.