Author contribution: Bulycheva EV — concept of the work, collection and processing of the material, writing of the text, editing and approval of the final text of the article; Lutsay ED — concept of the work, editing and approval of the final text of the article.

Compliance with ethical standards: this study does not need prior approval from the local ethics committee since it does not involve clinical trials, human subjects, or biological research. Data collection was carried out on a voluntary basis, ensuring the complete anonymity of all participants. Prior to the completion of questionnaires, every participant was informed of the purpose of data collection, methods of data processing and storage; all participants provided a voluntary informed consent to take part in the study