Toropainen, Sari
Niskanen, Einari A.
Malinen, Marjo
Sutinen, Päivi
Kaikkonen, Minna U.
Palvimo, Jorma J.
Article History
Received: 29 June 2016
Accepted: 31 August 2016
First Online: 19 September 2016
Competing interests
: The authors declare no competing financial interests.