1. Ryzhikh National Medical Research Center of Coloproctology; Russian Medical Academy of Continuous Professional Education
2. Ryzhikh National Medical Research Center of Coloproctology
3. Federal State Budgetary Educational Institution of the Russian Ministry of Health
4. Astrakhan State Medical University
5. Stavropol City Clinical Hospital No. 2
6. Belgorod Regional Clinical Hospital of St. Joasaph
7. Scientific Research Institute — Regional Clinical Hospital No. 1 named after Professor S.V. Ochapovsky
8. Bashkir State Medical University
9. Ryzhikh National Medical Research Center of Coloproctology; Pirogov Russian National Research Medical University
10. Rostov-on-Don Private healthcare institution Clinical Hospital “Russian Railways-Medicine”