O. N. Sigitova
Kazan State Medical University of the Ministry of Health of the Russian Federation; Kazan State Medical Academy — Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation
Russian Federation

Olga N. Sigitova — MD, Professor, Department of Outpatient Therapy and General Medical Practice

Kazan

E. V. Efremova
Ulyanovsk State University
Russian Federation

Elena V. Efremova — MD, Professor, Department of Therapy and Occupational Diseases

Ulyanovsk

A. R. Bogdanova
Kazan (Volga Region) Federal University
Russian Federation

Alina R. Bogdanova — MD, PhD, Associate Professor, Department of Internal Medicine, Institute of Fundamental Medicine and Biology

Kazan

M. I. Khasanova
Kazan State Medical Academy — Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation
Russian Federation

Milyausha I. Khasanova — MD, PhD, Associate Professor, Department of Urology, Nephrology and Transplantology

Kazan