L.V. Ivanitskiy - Reumatologist, Moscow Regional Research Clinical Institute named after M.F.Vladimirskiy E-mail: l.iwanitskiy@gmail.com E.V. Smirnova - Post-graduate Student, Faculty of Fundamental Medicine, Department of Internal Medicine, Lomonosov Moscow State University E-mail: elena.smirnova881@gmail.com T.N. Krasnova - Ph.D. (Med.), Associate Professor, Faculty of Fundamental Medicine, Department of Internal Medicine, Lomonosov Moscow State University E-mail: krasnovamgu@yandex.ru L.M. Samokhodskaya - Ph.D. (Med.), Associate Professor, Medical Scientific Educational Centre of Lomonosov Moscow State University E-mail: slm@fbm.msu.ru