1 Department of Pediatric Diabetology, Pediatric Teaching Clinical Hospital, Medical University of Warsaw, ul. Żwirki i Wigury 63, 02-091, Warsaw, Poland. katarzyna.dzygalo@uckwum.pl.
2 Department of Pediatrics, Hematology and Oncology, Medical University of Warsaw, 02-091, Warsaw, Poland.
3 Department of Pediatric Diabetology, Pediatric Teaching Clinical Hospital, Medical University of Warsaw, ul. Żwirki i Wigury 63, 02-091, Warsaw, Poland.
4 Department of Pediatrics, Medical University of Warsaw, 02-091, Warsaw, Poland.