Use of heparin in patients with severe COVID-19: What is the evidence?. Research, Society and Development, [S. l.], v. 10, n. 6, p. e28910615820, 2021. DOI: 10.33448/rsd-v10i6.15820. Disponível em: https://www.rsdjournal.org/rsd/article/view/15820. Acesso em: 5 dec. 2025.