1. Subdepartment of Social Medicine and Public Health, Department of Social Medicine, Pomeranian Medical University in Szczecin, 71-210 Szczecin, Poland
2. Department of Theory of Physical Culture and Sports Medicine, Faculty of Physical Education, Yanka Kupala State University of Grodno, 230023 Grodno, Belarus
3. Department of Integrated Medical Care, Faculty of Health Sciences, Medical University of Bialystok, 15-089 Bialystok, Poland