N-acetylcysteine reduces severity and mortality in COVID-19 patients: A systematic review and meta-analysis. Journal of Advanced Veterinary and Animal Research, [S. l.], v. 10, n. 2, p. 157–168, 2023. Disponível em: https://www.banglajol.info/index.php/JAVAR/article/view/80383. Acesso em: 3 jul. 2026.