1 Department of Internal Medicine, Allergology and Clinical Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland. [email protected]
2 Department of Internal Medicine, Autoimmune and Metabolic Diseases, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
3 Department of Gastrointestinal Surgery, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland