1. Ph.D, Department of Tourism, Recreation and Ecology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
2. Prof, Department of Anthropology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
3. Prof, Department of Internal Diseases with Clinic, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
4. Prof, Department of Physical Education in Gorzow Wielkopolski, Poznan University of Physical Education, Poznan, Poland