Bullying, depression, and suicidal ideation in Finnish adolescents: school survey.
Kaltiala-Heino R; Rimpelä M; Marttunen M; Rimpelä A; Rantanen P; BMJ (Clinical Research Ed.), 1999, vol. 319, issue 7206, p 348, ISSN 09598138. ISBN 09598138.
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