Affiliation: | 1. Department of Internal Diseases, Gastroenterology and Hepatology, University Clinical Hospital in Olsztyn, ul. Warszawska 30, 10-082, Olsztyn, Poland 2. Department of Internal Diseases, Gastroenterology, Cardiology and Infectiology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland 3. Department of Internal Medicine and Cardiology, Medical University of Warsaw, Warsaw, Poland
|