1. Department of Emergency Medicine, General Hospital of Shenyang Military Command, Shenyang, Liaoning, China (mainland)
2. Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, China (mainland)
3. Department of Urology, China Medical University, Hospital 1, Shenyang, Liaoning, China (mainland)