R. I. Saifutdinov
Orenburg State Medical University
Russian Federation

Rustam I. Saifutdinov, Dr. Sci. (Med.), Professor, Head of the Faculty Therapy and Endocrinology Department 

6, Sovetskaya St., Orenburg, 460014

O. V. Bugrova
Orenburg State Medical University
Russian Federation

Olga V. Bugrova, Dr. Sci. (Med.), Professor, Professor of the Faculty Therapy and Endocrinology Department 

6, Sovetskaya St., Orenburg, 460014

K. A. Nagornova
Notrh-Western State Medical University named after I.I. Mechnikov
Russian Federation

Kseniia A. Nagornova, Cand. Sci. (Med.), Associate Professor, Associate Professor of the Departments of Internal Medicine, Nephrology, General and Clinical Pharmacology with a Pharmacy Сourse 

47, Piskarevsky Ave., St Petersburg, 195067