RT Article T1 A meta-analysis of school-based cyberbullying prevention programs' impact on cyber-bystander behavior JF School psychology review A1 Torgal, Cagil A1 Valido, Alberto A1 El Sheikh, America J. A1 Robinson, Luz E. A1 Ingram, Katherine M. A1 Polanin, Joshua R. A1 Espelage, Dorothy L. A2 Valido, Alberto A2 El Sheikh, America J. A2 Robinson, Luz E. A2 Ingram, Katherine M. A2 Polanin, Joshua R. A2 Espelage, Dorothy L. LA English YR 2022 UL https://krimdok.uni-tuebingen.de/Record/1912621487 DO 10.1080/2372966X.2021.1913037