Clinicopathological and prognostic features of Epstein-Barr virus infection, microsatellite instability, and PD-L1 expression in gastric cancer - Pereira, Marina A.; Zilberstein, Bruno; Cecconello, Ivan; Alves, Venancio A. F.; Mello, Evandro S. de; Ribeiro Jr., Ulysses (13th Brazilian Congress of Surgical Oncology, 2018)