Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University;
Central Laboratory, Ren Ji Hospital, School of Medicine,Shanghai Jiao Tong University;
Department of Pathology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University;
State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiao Tong University;
Programmed; death; 1; Programmed; death; ligand; 1; Gastric; neuroendocrine; carcinomas; Prognosis; Tumor; infiltrating; lymphocytes;