1. National Medical Research Center of Oncology named after N. N. Petrov; St. Petersburg State University
2. National Medical Research Center of Oncology named after N. N. Petrov
3. National Medical Research Center of Oncology named after N. N. Petrov; St. Petersburg State Pediatric Medical University
4. National Medical Research Center of Oncology named after N. N. Petrov; Leningrad Regional Clinical Oncological Dispensary named after L. D. Roman