Vita Skuja1,2,3. 1. Riga Stradins University, Department of Internal Medicine, Riga, Latvia. 2. Riga East Clinical University Hospital, Department of Gastroenterology, Hepatology and Nutrition, Department of Emergency Medicine, Riga, Latvia. 3. Capital Clinic Riga, Anti-Aging Institute, Health Center 4, Department of Gastroenterology, Riga, Latvia.