Ethics approval and consent to participate
The study was conducted following the ethical principles of the Declaration of Helsinki. All study documents, including the study protocol and informed consent forms, have been reviewed by the ethics commission of the International Clinic of Rehabilitation. After the review process, the ethics commission approved to conduct the study (Decision № 2019–08-27).Participants and their legal representatives received comprehensive information about the procedures and study design. Written informed consent was obtained from legal representatives while participants were asked to give verbal assent.