Funding for this research was provided by:
Lietuvos Mokslo Taryba (Grant SEN-14/2015)
Received: 24 February 2020
Accepted: 14 September 2020
First Online: 5 November 2020
Ethics approval and consent to participate
: The study was approved by the Kaunas Regional Committee of Biomedical Research (Lithuania, Permission No. BE-2-44; 2015-12-23). The written informed consent has been obtained from each participant of the study after full explanation of the purpose and nature of all procedures used.
: Not applicable.
: The authors declare that they have no competing interests.