1. Department of Internal Medicine, Faculty of Medicine, University of Ljubljana, Zaloška cesta 007 , Ljubljana , 1000 , Slovenia
2. Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana , Ljubljana , Slovenia
3. Department of Internal Medicine, Faculty of Medicine, University of Ljubljana , Ljubljana , Slovenia
4. Department of Biostatistics and Medical Informatics, Faculty of Medicine, University of Ljubljana , Ljubljana , Slovenia
5. Department of Biostatistics and Scientific Informatics, University Rehabilitation Institute , Ljubljana , Slovenia
6. Department of Psychology, FAMNIT, University of Primorska , Koper , Slovenia
7. Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana , Ljubljana , Slovenia