1. Department of Gastroenterology, The First Hospital of Jilin University, Changchun 130021, China
2. State Key Laboratory on Integrated Optoelectronics, College
of Electronic Science and Engineering, Jilin University, Changchun 130012, China
3. State Key
Laboratory of Luminescence and Applications, Institute of Optics,
Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China