Upmanis, T.
Kažoka, H.
Kreicberga, A.
Vigante, B.
Article History
Received: 18 December 2017
Revised: 16 April 2018
Accepted: 24 April 2018
First Online: 31 May 2018
Compliance with Ethical Standards
:
: 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.