DUNG, T.; HANH, N.; TRA, D.; TIEN, T.; LINH, N.; TUYEN, N.; THINH, P.; BINH, D.; HUNG, N.; CHUNG, D. The relationship between PD-L1 expression and clinicopathological characteristics and prognosis of Vietnamese gastric cancer patients. Biomedical Research and Therapy, v. 9, n. 7, p. 5130-5139, 30 jul. 2022.