1. Science and Technology Innovation Center, The Fourth People’s Hospital of Jinan (The Teaching Hospital of Shandong First Medical University)
2. National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, Lanzhou, People’s Republic of China
3. Geriatric Medical Center, Division of Geriatric Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming
4. Department of Oncology, The Fourth People’s Hospital of Jinan City, The Teaching Hospital of Shandong First Medical University, Jinan