Luukka, Pasi http://orcid.org/0000-0003-0124-6646
Stoklasa, Jan http://orcid.org/0000-0002-1810-9181
Collan, Mikael http://orcid.org/0000-0003-2976-2829
Article History
First Online: 25 April 2018
Compliance with ethical standards
:
: All the authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.