1. City Clinical Hospital No. 31
2. Raisa Gorbacheva Memorial Research Institute for Pediatric Oncology, Hematology and Transplantation, I.P. Pavlov First Saint Petersburg State Medical University, Ministry of Health of Russia
3. City Hospital of the closed territorial unit Znamensk
4. Hematological Center named after professor R.O. Yeolyan, Ministry of Health of the Republic of Armenia
5. I.I. Mechnikov North-Western State Medical University, Ministry of Health of Russia