1. Vreden Russian Research Institute of Traumatology and Orthopedics
2. Vreden Russian Research Institute of Traumatology and Orthopedics; Mechnikov North-Western State Medical University
3. Mechnikov North-Western State Medical University; St.Petersburg Municipal Clinical Oncology Dispensary
4. Petrov National Medical Research Center for Oncology
5. Sokolov Clinical Hospital No.122