Is sleepiness associated with anxiety symptoms in schoolchildren aged 9 to 11 years?. Research, Society and Development, [S. l.], v. 10, n. 8, p. e17210817148, 2021. DOI: 10.33448/rsd-v10i8.17148. Disponível em: https://rsdjournal.org/rsd/article/view/17148. Acesso em: 5 dec. 2025.