Conflict of Interest Statement
It is necessary to indicate the absence or presence of a conflict of interest. If there is a conflict of interest, it must be specified.
When there is no conflict of interest, it is necessary to specify the phrase:
The authors declare that there is no conflict of interest in relation to this paper, as well as the published research results, including the financial aspects of conducting the research, obtaining and using its results, as well as any non-financial personal relationships.