M. D. Petrova
Northwest Public Health Research Center
Russian Federation

Milena D. Petrova, Junior Researcher, Department of Complex Hygienic Assessment of Physical Factors 

4 2^nd Sovetskaya Street, Saint Petersburg, 191036, Russian Federation 

N. Yu. Mal’kova
Northwest Public Health Research Center; North-Western State Medical University named after I.I. Mechnikov
Russian Federation

Natalia Yu. Mal’kova, Dr. Sci. (Biol.), Chief Researcher, Department of Complex Hygienic Assessment of Physical Factors; Professor of the Department of Hygiene of Educational and Training Conditions, Occupational and Radiation Hygiene

4 2^nd Sovetskaya Street, Saint Petersburg, 191036, Russian Federation

41 Kirochnaya Street, Saint Petersburg, 191015, Russian Federation