A. S. Vasilyev
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
Russian Federation

 Postgraduate student, acting junior researcher, Laboratory for dosimetry of
natural sources of radiation

Mira Str., 8, Saint-Petersburg, 197101, Russia 

I. K. Romanovich
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
Russian Federation

M.D., Professor, Academician of the Russian Academy of Sciences, Director 

 Saint-Petersburg 

T. A. Kormanovskaya
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
Russian Federation

 Ph.D. in Biological Sciences, Leading researcher, Laboratory for dosimetry of natural sources of radiation 

 Saint-Petersburg 

D. V. Kononenko
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
Russian Federation

 Researcher, Laboratory for dosimetry of natural sources of radiation 

 Saint-Petersburg 

O. A. Istorik
Directorate of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing in the Leningrad region
Russian Federation

 Head of the Directorate 

 Saint-Petersburg 

L. A. Eremina
Directorate of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing in the Leningrad region
Russian Federation

 Ph.D., Deputy Head of the sanitary supervision department of the Directorate  

 Saint-Petersburg