1. „Ciche Wąwozy” Health Resort, Nałeczów, Poland; Chair and Department of Epidemiology and Clinical Research Methodology, Medical University of Lublin, Lublin, Poland
2. „Ciche Wąwozy” Health Resort, Nałeczów, Poland; 3Faculty of Social Studies and Medical Sciences College of Social Studies Based, Lublin, Poland; EDU-MED. Individual Specialist Medical Practise of Lublin, Poland
3. Department of Applied Psychology, Medical University of Lublin, Poland
4. Chair and Department of Epidemiology and Clinical Research Methodology, Medical University of Lublin, Lublin, Poland