TAHIR USMAN et al. Knowledge, Attitude and Practice towards Covid-19 in Different Universities across Khyber Pakhtunkhwa, Pakistan: Knowledge, Attitude, and Practice towards Covid-19. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences, [S. l.], v. 60, n. S, p. 77–82, 2023. DOI: 10.53560/PPASB(60-sp1)812. Disponível em: https://www.ppaspk.org/index.php/PPAS-B/article/view/956. Acesso em: 4 dec. 2025.