Kalnins, Gints http://orcid.org/0000-0002-9593-6308
Cesle, Eva-Emilija
Jansons, Juris
Liepins, Janis http://orcid.org/0000-0001-7778-5561
Filimonenko, Anatolij
Tars, Kaspars
Article History
Received: 25 April 2019
Accepted: 18 December 2019
First Online: 20 January 2020
Competing interests
: The authors declare no competing interests.