1. Internal Medicine Clinic, Department of Gastroenterology and Hepatology, University Clinical Centre of the Republic of Srpska, 78000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia
4. Bežanijska Kosa Clinical Hospital Center, 11000 Belgrade, Serbia
5. Landspitali University Hospital, 101 Reykjavik, Iceland
6. Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
7. Group for Nutritional Biochemistry and Dietology, Centre of Research Excellence in Nutrition and Metabolism, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia