1 Health Promotion and Obesity Management Unit, Department of Pathophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia. Electronic address: Awylegala@sum.edu.pl.
2 Ophthalmology Department, Railway Hospital, Katowice Panewnicka 65. 40-765 Katowice, Poland. II School of Medicine with the Division of Dentistry in Zabrze Medical University of Silesia, Katowice.