1. Department of Metabolic Diseases, Jagiellonian University Medical College, Krakow, Poland.
2. Department of Metabolic Diseases and Diabetology, University Hospital in Krakow, Krakow, Poland.
3. Department of Internal Medicine, Clinical Provincial Hospital of Frederic Chopin No. 1 in Rzeszów, Rzeszów, Poland.
4. Department of Internal Medicine, College of Medical Sciences, University of Rzeszów, Rzeszów, Poland.
5. Department of Psychiatry, Jagiellonian University Medical College, Krakow, Poland.
6. Medtronic, Tolochenaz, Switzerland.