Hongwilai, P. ., T. . Sirisrisornchai, A. . Kanchanapongporn, and U. Jeerasitkul. “Service Quality Development for OPD Thammasat University Hospital”. Journal of the Thai Medical Informatics Association, vol. 8, no. 1, June 2022, pp. 38-45, https://he03.tci-thaijo.org/index.php/jtmi/article/view/201.