MALIK, Muhammad Umer et al. Clinical and demographic characteristics of COVID-19 cases in Brunei Darussalam: comparison between the first and second waves, 2020 and 2021. Western Pacific Surveillance and Response, Manila, Philippines, v. 13, n. 3, 2022. DOI: 10.5365/wpsar.2022.13.3.925. Disponível em: https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/925. Acesso em: 4 jun. 2026.