1. Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
2. Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
3. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China
4. People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, China