1. Dmitri Rogachev National Research Centre for Paediatric Haematology, Oncology and Immunology Moscow Russian Federation
2. Belorussian Research Centre for Paediatric Oncology, Haematology and Immunology Minsk Russian Federation
3. Russian Children's Hospital MoscowRussian Federation
4. City Clinical Hospital No. 31 St. Petersburg Russian Federation
5. Regional Children's Clinical Hospital No. 1 Ekaterinburg Russian Federation
6. Regional Children's Clinical Hospital Arkhangelsk Russian Federation
7. Regional Children's Clinical Hospital KrasnodarRussian Federation
8. Regional Children's Clinical Hospital Perm Russian Federation
9. Regional Children's Clinical Hospital Nizhny Novgorod Russian Federation
10. District Clinical Children's Hospital Nizhnevartovsk Russian Federation