Nevala, Nina http://orcid.org/0000-0002-7949-2452
Pehkonen, Irmeli
Teittinen, Antti
Vesala, Hannu T.
Pörtfors, Pia
Anttila, Heidi
Funding for this research was provided by:
The Social Insurance Institution of Finland
Article History
First Online: 16 May 2019
Compliance with ethical standards
:
: Nina Nevala, Irmeli Pehkonen, Antti Teittinen, Hannu T. Vesala, Pia Pörtfors, and Heidi Anttila declare that they have no conflicts of interest.