Department of Gastrointestinal Surgery The First Affiliated Hospital of Yangtze University Jingzhou China;
Department of Gastrointestinal Surgery The First Affiliated Hospital of Yangtze University Jingzhou China;
Department of Gastrointestinal Surgery The First Affiliated Hospital of Yangtze University Jingzhou China;
Department of Gastroenterology The First Affiliated Hospital of Yangtze University Jingzhou China;
Department of Gastroenterology The First Affiliated Hospital of Yangtze University Jingzhou China;
Department of Gastroenterology The First Affiliated Hospital of Yangtze University Jingzhou China;
Department of Gastrointestinal Surgery The First Affiliated Hospital of Yangtze University Jingzhou China;
Risk Management; Peptic Ulcer; Upper Gastrointestinal Bleeding; Nursing;