Aitullina, Aleksandra http://orcid.org/0000-0003-2761-7636
Purviņa, Santa http://orcid.org/0000-0002-4934-3106
Krūmiņa, Angelika http://orcid.org/0000-0003-0726-3375
Article History
Received: 20 May 2020
Accepted: 14 September 2020
First Online: 29 September 2020
Conflicts of interest
: The authors declare no conflict of interests.