1. Pirogov Russia National Research Medical University: Moscow, Russia
2. The Charitable Foundation for the Development of Palliative Care “Children’s Palliative”, Moscow, Russia
3. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow, Russia
4. Republican Children’s Clinical Hospital of the Ministry of Health of the Udmurt Republic, Izhevsk, Russia
5. Tambov Regional Children’s Clinical Hospital, Tambov, Russia
6. Regional Children’s Clinical Hospital No. 2, Vladivostok, Russia
7. The Children’s Republican Clinical Hospital of the Ministry of Health of the Republic of Tatarstan, Kazan, Russia