1. Regional Nizhniy Novgorod State Oncological Hospital; Privolzhsky Research Medical University
2. P. A. Herzen Moscow Cancer Research Institute, branch of National Medical Research Radiology Center
3. Privolzhsky Research Medical University
4. Regional Nizhniy Novgorod State Oncological Hospital; A. Tsyb Medical Radiological Research Center — branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC)