Gastric Cancer/Gastroesophageal Junction Adenocarcinoma Clinical Trials in Nanjin

XELOX Combined With Fruquintinib and Sintilimab Regimen Conversion Therapy for Gastric Cancer/Gastroesophageal Junction Adenocarcinoma Only With Liver and/or Retroperitoneal Lymph Node Metastasis, a Prospective Single-arm, Multicenter Study