1. GBUZ of the Leningrad region "Center of professional pathology"
2. Saratov State Medical University named after V.I. Razumovsky of the Ministry of Health of the Russian Federation
3. Federal State Budgetary Institution "Federal Scientific Center for Medical and Preventive Technologies for Public Health Risk Management" of Rospotrebnadzor
4. GUZ "Saratov City Clinical Hospital No. 1 named after Y.Y. Gordeev"