V. P. Ramzaev
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

 Candidate of Medical Sciences, Leading Researcher of the Laboratory of
External Exposure

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

A. N. Barkovsky
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

 Head of the Federal Radiological Centre 

 Saint-Petersburg 

A. A. Bratilova
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

 Research Fellow of Internal Radiation Laboratory  

 Saint-Petersburg