TY JOUR TI Adolescent and Youth Suicide: Risk Factors and Approaches to Prevention KW suicide KW school prevention KW school psychologist KW adolescents KW risk factors JO Russian Journal of Deviant Behavior AU Markova, S.V. AU Nikitskaya, E.A. PY 2021 IS PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION