Jitawatanarat, P., P. Lertsanguansinchai, and S. Chakrapee-sirisuk. “Metastatic Esophageal Squamous Cell Carcinoma Successfully Treated With Immunotherapy: First Case Report in Thailand”. The Bangkok Medical Journal, vol. 12, no. 1, Sept. 2016, p. 87, doi:10.31524/bkkmedj.2016.09.013.