1. Department and Clinic of Internal Medicine, Angiology and Physical Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Batorego 15 St., 41-902 Bytom, Poland
2. Department of Biochemistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Jordana 19 St., 41-808 Zabrze, Poland
3. Social and Medical Faculty, Higher School of Strategic Planning, Kościelna 6 St., 41-303 Dąbrowa Górnicza, Poland
4. Chair and Department of Internal Medicine, Medical University of Lublin, Staszica 16 St., 20-081 Lublin, Poland
5. 1st Department of Cranio-Maxillofacial Surgery, Faculty of Medical Sciences, Medical University of Silesia, Francuska20/24 St., 40-027 Katowice, Poland
6. Faculty of Science and Technology, University of Silesia, Bankowa 14 St., 40-007 Katowice, Poland