Department of Pediatrics, Division Pediatric Propedeutics and Rare Disorders, Wroclaw Medical University, Wrocław, Poland. Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland. Department of Experimental and Clinical Neuropathology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland. Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland. Third Department and Clinic of Pediatrics, Immunology and Rheumatology of Developmental Age, Wroclaw Medical University, Wroclaw, Poland. Department of Paediatrics and Infectious Diseases, Wroclaw Medical University, Wroclaw, Poland. Department of Paediatric Neurology, J. Gromkowski Regional Specialist Hospital, Wrocław, Poland. Cancer Genetics Unit Cancer Prevention Department, The Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland.