DAS, Shuva et al. Effectiveness of the ChAdOx1 nCoV-19 vaccination among COVID-19 patients: a retrospective cohort study. Asian Journal of Medical and Biological Research, [S. l.], v. 8, n. 4, p. 251–263, 2022. DOI: 10.3329/ajmbr.v8i4.62138. Disponível em: https://www.banglajol.info/index.php/AJMBR/article/view/62138. Acesso em: 12 sep. 2025.