Bullying in adolescents across three years in the context of the COVID-19 pandemic: a repeated cross-sectional and prospective analysis. - de Oliveira, Bruno Nunes; Lopes, Marcus Vinicius Veber; da Costa, Bruno Gonçalves Galdino; de Mello, Gabrielli Thais; Maciel, Gabriel Pereira; Silva, Kelly Samara (BMC Public Health, 2025)