1. V A. Negovsky Research Institute of General Reanimatology, Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology
2. City Clinical Hospital № 40
3. Rogachev Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russia
4. Rogachev Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russia; Central Research Institute of Epidemiology of Rospotrebnadzor