Taja S, Tianwibool P, Sutham K, Wongtanasarasin W, Sairai R, Kaewpaengchan W, Netasit J. Impact of the COVID-19 Pandemic on Emergency Medical Service Operation Time at Maharaj Nakorn Chiang Mai Hospital. J Health Syst Res [internet]. 2024 Mar. 29 [cited 2025 May 20];18(1):136-47. available from: https://he04.tci-thaijo.org/index.php/j_hsr/article/view/2404