HASSAN, Taimoor. What we need to know about the Delta variant. Pakistan Armed Forces Medical Journal, [S. l.], v. 72, n. 2, p. 727, 2022. DOI: 10.51253/pafmj.v72i2.7088. Disponível em: https://pafmj.org/PAFMJ/article/view/7088.. Acesso em: 15 may. 2025.