1. Department of Pediatrics, Oncology, Hematology and Diabetology; Medical University of Lodz; Lodz Poland
2. Department of Biostatistics and Translational Medicine; Medical University of Lodz; Lodz Poland
3. Postgraduate School of Molecular Medicine; Medical University of Warsaw; Warsaw Poland
4. Department of Clinical Genetics; Medical University of Lodz; Lodz Poland
5. Department of Children's Diabetology, Medical School of Silesia; Katowice Poland
6. Department of Pediatrics, Diabetology and Endocrinology; Medical University of Gdansk; Gdansk Poland
7. Pediatric Endocrinology Department; University Children's Hospital Jagiellonian University, Medical College; Cracow Poland
8. Outpatient Clinic for Pediatric Patients with Diabetes; Bialystok Poland
9. Department of Pediatrics, Endocrinology, Diabetology with Cardiology Divisions; Medical University of Bialystok; Bialystok Poland
10. Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology of the Developmental Age; Pomeranian Medical University in Szczecin; Szczecin Poland
11. Department of Metabolic Disease; Collegium Medicum Jagiellonian University of Cracow; Cracow Poland