1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China
2. DUT-BSU Joint Institute, Dalian University of Technology, Dalian 116024, Liaoning Province, China
3. School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, Liaoning Province, China
4. School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian 116024, Liaoning Province, China
5. Department of Endoscopy, Liaoning Cancer Hospital and Institute, Shenyang, 110042, Liaoning Province, China
6. Department of Gastric Cancer, Liaoning Cancer Hospital and Institute, Cancer Hospital of Dalian University of Technology, Shenyang, 110042, Liaoning Province, China