A. A. Kovshov
North-West Public Health Research Cente; North-Western State Medical University named after I.I. Mechnikov
Russian Federation

Aleksandr A. Kovshov, Cand. Sci. (Med.), Acting Head of the Hygiene Department, Leading Researcher; Associate Professor, Department for Hygiene of Educational, Training, and Labor Conditions, and Radiation Hygiene

4, 2nd Sovetskaya Street, Saint Petersburg, 191036

41 Kirochnaya Street,  Saint Petersburg, 191015

M. N. Kir’yanova
North-West Public Health Research Center
Russian Federation

Marina N. Kir’yanova, Cand. Sci. (Med.), Senior Researcher, Occupational Hygiene Department

4, 2nd Sovetskaya Street, Saint Petersburg, 191036

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

 Alisa O. Butenko, student, Pediatric Faculty

6-8 Leo Tolstoy Street,  Saint Petersburg, 197022