S. L. Valina
Federal Scientific Center for Medical and Preventive Health Risk Management Technologies 
Russian Federation

 and. Sc. (Med.), Head of the Department of Hygiene of Children and Adolescents

 Monastyrskaya str. 82, Perm 614045, Russian Federation 

I. E. Shtina
Federal Scientific Center for Medical and Preventive Health Risk Management Technologies 
Russian Federation

 Cand. Sc. (Med.), Head of the Laboratory of Complex Problems of Children’s Health

 Monastyrskaya str. 82, Perm 614045, Russian Federation 

O. Yu. Ustinova
Federal Scientific Center for Medical and Preventive Health Risk Management Technologies; Perm State National Research University
Russian Federation

 Dr. Sc. (Med.), Deputy Clinical Director

 Monastyrskaya str. 82, Perm 614045, Russian Federation 

 Bukireva str. 15, Perm 614990, Russian Federation 

D. A. Eisfeld
Federal Scientific Center for Medical and Preventive Health Risk Management Technologies 
Russian Federation

 Cand. Sc. (Biol.), Deputy General Director

 Monastyrskaya str. 82, Perm 614045, Russian Federation