1. Yaroslavl State Medical University; Solovyov A&E Clinical Hospital
2. Central clinical hospital with outpatient health center of the Business Administration for the President of the Russian Federation
3. North-Western state medical University named after I.I. Mechnikov; Clinical rheumatology hospital № 25
4. Solovyov A&E Clinical Hospital
5. Pirogov National Research Medical University, Russian Gerontology Research and Clinical Centre
6. Zborovsky Research Institute of Clinical and Experimental Rheumatology
7. Clinical rheumatology hospital № 25