O. D. Belyaeva
Pavlov University
Russian Federation

Olga D. Belyaeva, Dr. of Sci. (Med.), Professor, Professor of the Department of Faculty Therapy with a course in Endocrinology, Cardiology with the Clinic named after acad. G. F. Lang

Saint Petersburg

O. A. Berkovich
Pavlov University
Russian Federation

Olga A. Berkovich, Dr. of Sci. (Med.), Professor, Professor of the Department of Faculty Therapy with a course in Endocrinology, Cardiology with the Clinic named after acad. G. F. Lang 

6–8 L'va Tolstogo St., Saint Petersburg, 197022

O. N. Zhdanova
Pavlov University
Russian Federation

Olga N. Zhdanova, Cand. of Sci. (Med.), assistant professor, assistant professor of the Department of Faculty Therapy with a course in Endocrinology, Cardiology with the Clinic named after acad. G. F. Lang

Saint Petersburg