1. North-Western State Medical University named after I.I. Mechnikov;
Saint Petersburg Clinical Rheumatology Hospital N 25
2. V.A. Nasonova Research Institute of Rheumatology
3. National Medical Research Center for Therapy and Preventive Medicine
4. N.I. Pirogov Russian National Research Medical University
5. National Medical Research Center for Endocrinology
6. Yaroslavl State Medical University
7. Sverdlovsk Regional Clinical Hospital N 1
8. Research Institute of Clinical and Experimental Rheumatology named after A.B. Zborovsky
9. Postgraduate Institute for Public Health Workers