1. Department of Geriatrics, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
2. Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
3. Department of Medical Oncology, Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, Liaoning Province Clinical Research Center for Cancer, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)