Mojca Jensterle1, Luka Lezaic2, Jera Jeruc3, Andrej Janez4. 1. Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. mojcajensterle@yahoo.com. 2. Department for Nuclear Medicine, University Medical Centre, Faculty of Medicine Ljubljana, Ljubljana, Slovenia. 3. Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. 4. Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.