Tariyo P. The situation of detecting COVID-19 virus variants and clinical symptoms of infected patients at Nakornping Hospital, Chiang Mai during 2021–2023. J Nakornping Hosp [internet]. 2025 Mar. 16 [cited 2026 Sep. 20];16(1):79-92. available from: https://he01.tci-thaijo.org/index.php/jnkp/article/view/271818