AFZAL, N.; TARIQ, N.; SHAKEEL, D.; SULTAN, S. Trend of Anti-SARS-COV-2 Seropositivity in Karachi. National Journal of Health Sciences, [S. l.], v. 5, n. 3, p. 104-108, 2021. Disponível em: https://ojs.njhsciences.com/index.php/njhs/article/view/170. Acesso em: 24 apr. 2024.