V. A. Dobronravov
First Pavlov Saint Petersburg State Medical University
Russian Federation

Prof. Vladimir A. Dobronravov, MD, PhD, DSc 

Department of propedeutics of internal diseases and Research Institute of Nephrology of the Pavlov

M. S. Khrabrova
First Pavlov Saint Petersburg State Medical University
Russian Federation

Maria S. Khrabrova, MD, PhD 

Department of Propedeutics of Internal Diseases, Assistant prof. 

197022, Russia, Saint-Petersburg, Str. Leo Tolstoy, 17 build 54. 

A. O. Mukhametdinova
First Pavlov Saint Petersburg State Medical University
Russian Federation

Anastasiya O. Muhametdinova 

Department of propedeutics of internal diseases, Associate prof. 

197022, Russia, Saint-Petersburg, Str. Leo Tolstoy, 6/8.

V. G. Sipovskiy
First Pavlov Saint Petersburg State Medical University
Russian Federation

Vassili G. Sipovski MD, PhD. 

Department of propedeutics of internal diseases and Research Institute of Nephrology of the Pavlov

197089, Russia, Saint-Petersburg, Str. Leo Tolstoy, 17.