Affiliation: | 1. Department of Gastroenterology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland;2. Department of Clinical Molecular Biology, Medical University of Bialystok, Bialystok, Poland;3. Department of Inorganic and Analytical Chemistry, Medical University of Bialystok, Bialystok, Poland;4. Department of Statistics and Medical Informatics, Medical University of Bialystok, Bialystok, Poland |