Valkama, Anita J
Meinilä, Jelena M
Koivusalo, Saila B
Lindström, Jaana
Rönö, Kristiina
Tiitinen, Aila E
Stach-Lempinen, Beata
Kautiainen, Hannu J
Viljakainen, Heli
Andersson, Sture
Eriksson, Johan G
Article History
Received: 23 May 2017
Accepted: 30 August 2017
First Online: 6 November 2017
Compliance with ethical standards
:
: The authors declare that they have no competing interests.