Body dissatisfaction and bullying among underweight schoolchildren in Brazil and Portugal: a cross-cultural study - Zequinão, Marcela Almeida; Medeiros, Pâmella de; Oliveira, Wanderlei Abadio de; Lopese, Luís Carlos Oliveira; Pereira, Beatriz; Santos, Manoel Antônio dos (Journal of Human Growth and Development, 2022)