1. Hospital in Brzesko, Clinic of Pediatrics, Brzesko, Poland
2. Department of Pediatric and Adolescent Endocrinology, Chair of Pediatrics, Pediatric Institute, Jagiellonian University, Medical College, Kraków, Poland
3. University Children’s Hospital of Kraków, Kraków, Poland
4. Jagiellonian University Medical College, Department of Metabolic Diseases, Kraków, Poland