1. Metabolic Syndrome Department, Nazarbayev University Medical Center, “ANADETO” medical center, Astana, Kazakhstan;
2. Gastroenterology and Hepatology Department, Nazarbayev University Medical Center, Astana, Kazakhstan;
3. Faculty of Pathology, Medical University Astana, Kazakhstan;
4. Faculty of Postgraduate Education, Kazakh National Medical University named Asfendiarov, Almaty, Kazakhstan;
5. Department of Surgery, National Center for Neurosurgery, Astana, Kazakhstan;
6. Faculty of Pathology and Forensic Medicine, Medical University Astana, “ANADETO” medical center, Astana, Kazakhstan