XIE, Zhoujie. Statistical Analysis of COVID-19 Vaccine Effectiveness:A Retrospective Study Based on Global Data. Transactions on Materials, Biotechnology and Life Sciences, [S. l.], v. 8, p. 460–465, 2025. DOI: 10.62051/8b9wcy88. Disponível em: https://tmbls.org/index.php/ojs/article/view/74. Acesso em: 2 jul. 2026.