1. 1Department of Animal Physiology and Biochemistry, Poznań University of Life Sciences, Poznań, Poland
2. 2Department of Hepatology and Gastroenterology & The Interdisciplinary Centre of Metabolism: Endocrinology, Diabetes and Metabolism, Charité-University Medicine Berlin, Berlin, Germany
3. 3Park-Klinik Weissensee, Internal Medicine – Gastroenterology, Berlin, Germany