Koponen, Maarit http://orcid.org/0000-0002-6123-5386
Salmi, Leena http://orcid.org/0000-0002-4725-3844
Nikulin, Markku http://orcid.org/0000-0002-7048-1140
Article History
Received: 15 July 2018
Accepted: 9 February 2019
First Online: 8 March 2019