1. Saint-Petersburg Clinical Scientific and Practical Center for Specialised Types of Medical Care (Oncological)
2. N.I. Pirogov Russian National Research Medical University of Ministry of Healthcare of the Russian Federation
3. Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation
4. Regional Children's Clinical Hospital
5. Tula Children's Regional Clinical Hospita