P. Anukulpipat, K. Boonsanong, K. Sammawong, R. Chaemchuen, and S. Pingsuthiwong, “The quality of outpatient services according to the perception of patients in Samutprakan Hospital”, SMPK. Hos. J. , vol. 1, no. 1, pp. 58–69, Jun. 2023.