ISSN Print 2713-0878
ISSN Online 2713-0886
Russian Bulletin of Hygiene
BIOMEDICAL JOURNAL OF ERMC EASTERN EUROPEAN
National Medical Research Center for Children's Health, Moscow, Russia
Correspondence should be addressed: Yulia V. Solovyova
Lomonosovsky prospect, 2, bld. 1, Moscow, 119296, Russia; ur.liam@42_aluy
Author contribution: Solovyova YuV — data acquisition and statistical processing, literature review, manuscript writing.
Compliance with ethical standards: all subjects (high school seniors, their parents and teachers) submitted the informed consent to study participation.