1. Ryzhikh National Medical Research Center of Coloproctology; Russian Medical Academy of Continuous Professional Education
2. Ryzhikh National Medical Research Center of Coloproctology
3. N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
4. ”National Medical Research Center of Oncology na N.N. Petrov” Ministry of Healthcare of Russian Federation
5. Alexandro-Mariinsky clinical hospital; Astrakhan State Medical University
6. Chita regional clinical hospital
7. Ryazan Regional Clinical Hospital; Ryazan State Medical University
8. Irkutsk Regional Oncological Centre; Irkutsk State Medical University
9. GAUZ RKOD of the Ministry of Health of the Republic of Bashkortostan
10. Pirogov Russian national research medical university; Municipal clinical hospital № 24 of the Moscow Healthcare department
11. Astrakhan State Medical University
12. Ryazan Regional Clinical Hospital