Clinicopathological Characteristic of PD-L1 in Gastric Cancer Patients. Issue 2 (February 2020) - Polom, Karol; Williams, Coralie; Marano, Luigi; Shen, Qiujin; D'Ignazio, Alessia; Kamali-Moghaddam, Massod; Marrelli, Daniele; Roviello, Franco